MakeAssemblerBufferExecutable now flushes the i-cache, so we do
not need to do that again.

Change-Id: I46f5619167114cdb84064ef363106bee64282d1f
Reviewed-on: https://chromium-review.googlesource.com/1152813Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
Cr-Commit-Position: refs/heads/master@{#54822}

Bug: v8:7942
Change-Id: I7b3740b04cbcaa56dc809150900ab8d821b054ce
Reviewed-on: https://chromium-review.googlesource.com/1156544Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54821}

R=titzer@chromium.org

Bug: v8:7754, v8:7965
Change-Id: I5cb76b4e989fbe6d4d08bafb60dbbb26c3d58e2d
Reviewed-on: https://chromium-review.googlesource.com/1156515Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54820}

... So that this can be re-used in the intl code. Also, add a helper
method that loads the iterator if it's not provided.

Bug: v8:5751
Change-Id: Ifc1142a486b2cdf1c33a813c5446b206ad9f81ef
Reviewed-on: https://chromium-review.googlesource.com/1156390
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54819}

As discussed offline, this header is not really useful without its
inline definitions. So instead of trying to split it (unnaturally),
declare defeat and make it an inline header file.

Also remove two unnecessary uses of it, move the JSON stringifier
class into its .cc file (because it needs IncrementalStringBuilder
inline) and forward declare in prettyprinter.h.

R=petermarshall@chromium.org, mstarzinger@chromium.org
BUG=v8:7965

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I7ba032ca718a195e156ec3e59f8e858a25423450
Reviewed-on: https://chromium-review.googlesource.com/1156401Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54818}

Use sizeof of the C type instead.

Also fix a few #undef's that got reported after my changes.

R=jarin@chromium.org

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I30a43b3d93e6df04fb9fb33050b52988edd7fdb1
Reviewed-on: https://chromium-review.googlesource.com/1155108Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54817}

This changes recording of compilation stats (i.e. code and reloc info
size) for each code object individually after it is finished, instead of
for the entire module. It avoids needed to iterate the code table which
would race with background tasks performing tier-up.

R=clemensh@chromium.org

Change-Id: Ic196fccb38b069a07e79fed4633d01dfc2639cd7
Reviewed-on: https://chromium-review.googlesource.com/1156396
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54816}

R=titzer@chromium.org
BUG=v8:7424

Change-Id: I49f0f31e19d9242ac6eb26406a0aecd4d60ad869
Reviewed-on: https://chromium-review.googlesource.com/1148396
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54815}

There are still some cases where entry->instruction_start() is 0,
meaning that computing pc_offset makes no sense. We don't care about
those cases really; the dcheck in CodeMap::FindEntry will find the
interesting cases.

Bug: v8:7983, v8:8002
Change-Id: I7369f32da15e858f1c7af88f88cede60751b7eea
Reviewed-on: https://chromium-review.googlesource.com/1156398
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54814}

This changes Call(ExternalReference) to use the correct Mov() overload,
which contains logic to load external references indirectly (i.e. in an
isolate-independent way).

Bug: v8:6666, v8:7985
Change-Id: Ib6f3931308c7d13fd4ef0563b7e1e83db3a760eb
Reviewed-on: https://chromium-review.googlesource.com/1152730
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54813}

This new method only compares Strings and so doesn't need a Context. It
also can't throw so it returns bool. Can be used in place of the
deprecated Equals method and many Equals call currently taking a
Context.

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I4cfe7747aa140e5a55d9513681ee4704414e1545
Reviewed-on: https://chromium-review.googlesource.com/1151321
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54812}

BUG=chromium:863205
R=clemensh@chromium.org

Change-Id: I15f3a09e15210a80b155def5761d9aead95d19b7
Reviewed-on: https://chromium-review.googlesource.com/1156386Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54811}

The lifetime of the WasmInterpreter is managed by the GC. However, we
did not tell the GC the amount of memory consumed by the interpreter.
Therefore it was possible to fill up memory with instances of the
interpreter without triggering a GC to free memory. With this CL we pass
the size of the stack as an estimate for the size of the interpreter. At
least in the fuzzer the stack is the dominating factor for memory
consumption.

R=clemensh@chromium.org

Bug: chromium:863198
Change-Id: Ic5cb0bd364500bcff793a1fd53d2d0113196dfe2
Reviewed-on: https://chromium-review.googlesource.com/1156385Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54810}

For optimized code there are two modes. This is controlled by
NeedsSourcePositionsForProfiling(). The problem we currently have is
that this mode must be enabled before the code is optimized, otherwise
the source position information will be low quality, even once the CPU
profiler is turned on.

Also add an implication from --future to this new flag, to gather
perf & memory data from the bots.

Bug: v8:7983
Change-Id: I993fc03df83028529eea365b6d336d9f4c0dcd2b
Reviewed-on: https://chromium-review.googlesource.com/1156309Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54809}

R=ahaas@chromium.org
TEST=cctest/test-wasm-shared-engine
BUG=v8:7424

Change-Id: Idad7bcfe2734df7395c62ec56fb737e180035c76
Reviewed-on: https://chromium-review.googlesource.com/1152918
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54808}

This reverts commit 23cb219f.

Reason for revert: https://crbug.com/v8/7996

Original change's description:
> [build] Add MB config for deprecation warning bot
> 
> TBR=yangguo@chromium.org
> NOTRY=true
> 
> Bug: v8:7963
> Change-Id: I1a91047b2a3c7d128f3b01a0970ce53a63c196d6
> Reviewed-on: https://chromium-review.googlesource.com/1145187
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54585}

TBR=machenbach@chromium.org,yangguo@chromium.org
NOTRY=true

Bug: v8:7996
Change-Id: Ib6a0c972cd9bdf864295f70ebeda50f9f23ca314
Reviewed-on: https://chromium-review.googlesource.com/1156404
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54807}

This avoids serializing and deserializing the sharable part of a module
when it is transferred via {TransferrableModule}, which is possible when
all Isolates run off the same engine via the --wasm-shared-engine flag.

This adds a new --wasm-shared-code flag to enable this feature.

R=ahaas@chromium.org
BUG=v8:7424

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I099d581d7ccc4d058a4646f545a011745fd84eb4
Reviewed-on: https://chromium-review.googlesource.com/1142144
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54806}

ReadFile returned a Vector with ownership transfer, i.e. the client
needed to call Dispose to free the memory. This CL changes the interface
to return a std::string instead, which manages ownership. As it turns
out, there is only one user of ReadString that sometimes calls an API
function which expects to take ownership of its Vector argument.

Bug: v8:7932
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ie624a7a65cf5814fddce7a57bc557e4b9876bc53
Reviewed-on: https://chromium-review.googlesource.com/1155115
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54805}

Also define some infrastructure for serialization.

Bug: v8:7790
Change-Id: Icaa3d5b877dca41dfd5554683d05667fda115e80
Reviewed-on: https://chromium-review.googlesource.com/1150531
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54804}

They were marked V8_DEPRECATE_SOON for the 6.9 branch, so we deprecate
them for the 7.0 branch.

R=yangguo@chromium.org

Bug: v8:7868
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Idc42affd4d1b103e9946e3b77a93720694eb2dfd
Reviewed-on: https://chromium-review.googlesource.com/1150024Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54803}

Bug: v8:6922
Change-Id: I6341cf5d16276f894c5986c194ff3fff3b71b46a
Reviewed-on: https://chromium-review.googlesource.com/1154973Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54802}

This reverts commit d854d351.

Reason for revert: Speculative revert for webkit unit tests:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/25209

Original change's description:
> [builtins] Clear RelocInfo for off-heap trampolines
> 
> For technical reasons, we used to serialize off-heap trampolines with a
> RelocInfo containing a single OFF_HEAP_TARGET entry. This RelocInfo was
> never needed at runtime. It also ended up being somewhat misleading
> because printing an embedded code object would show the OFF_HEAP_TARGET
> entry (belonging to the trampoline) at the first 'real' instruction.
> 
> With this CL, we explicitly serialize an empty byte array as the reloc
> info for each off-heap trampoline, i.e. the snapshot will never contain
> such off-heap target reloc infos.
> 
> Bug: v8:6666, v8:7969
> Change-Id: If6fa85a438d093ed5dcea07ce0de1db49a224d28
> Reviewed-on: https://chromium-review.googlesource.com/1146643
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54786}

TBR=yangguo@chromium.org,jgruber@chromium.org

Change-Id: If5eabd162141149361df90095b89a173fe2cb81e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6666, v8:7969
Reviewed-on: https://chromium-review.googlesource.com/1155594Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54801}

This reverts commit d9f6c685.

Reason for revert:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20gc%20stress/17584

Original change's description:
> Reland [CloneObjectIC] overwrite monomorphic/polymorphic feedback if deprecated
> 
> An object with a deprecated Map which has already been cached in
> CloneObjectIC feedback is still a valid Map for fast cloning --- but
> to be consistent with other ICs, deprecated maps are ignored, and are
> expected to be transitioned away from.
> 
> If the source object has a deprecated map, the instance is migrated.
> 
> BUG=v8:7611, chromium:867958, chromium:868586
> R=​jkummerow@chromium.org, mvstanton@chromium.org
> 
> Change-Id: I477aec6c8d0ae1e1648a70e85d2fd46146521d1c
> Reviewed-on: https://chromium-review.googlesource.com/1154143
> Commit-Queue: Caitlin Potter <caitp@igalia.com>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54799}

TBR=jkummerow@chromium.org,mvstanton@chromium.org,caitp@igalia.com

Change-Id: Ifcb422c3a692543490710d450590323524a6359a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7611, chromium:867958, chromium:868586
Reviewed-on: https://chromium-review.googlesource.com/1155593Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54800}

An object with a deprecated Map which has already been cached in
CloneObjectIC feedback is still a valid Map for fast cloning --- but
to be consistent with other ICs, deprecated maps are ignored, and are
expected to be transitioned away from.

If the source object has a deprecated map, the instance is migrated.

BUG=v8:7611, chromium:867958, chromium:868586
R=jkummerow@chromium.org, mvstanton@chromium.org

Change-Id: I477aec6c8d0ae1e1648a70e85d2fd46146521d1c
Reviewed-on: https://chromium-review.googlesource.com/1154143
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54799}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/b668f37..3e09e23

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/buildtools/+log/0dd5c6f..9a90d9a

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/e05f902..65f883b

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/d795ab8..b0e855a

Rolling v8/third_party/proguard: https://chromium.googlesource.com/chromium/src/third_party/proguard/+log/eba7a98..63f6c0b

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/e26243c..24c4916

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I8f71d9ff29ee05663bd7a17cc40737eb996afdb6
Reviewed-on: https://chromium-review.googlesource.com/1156060
Commit-Queue: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Reviewed-by: V8 Autoroller <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#54798}

Bug: v8:7988
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ib06e07b20c4a80baac7667241906142d60ada8e8
Reviewed-on: https://chromium-review.googlesource.com/1152453
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54797}

Bug:v8:6532

Change-Id: Ie983fa561654f86597b8f45c5ce11f993846bfe6
Reviewed-on: https://chromium-review.googlesource.com/1145893
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54796}

Bug: v8:7993,v8:7994
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: I058a2b8181b933dce9f71dab2b03304a424ae0ea
Reviewed-on: https://chromium-review.googlesource.com/1154237
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54795}

Bug: v8:7979
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ic30da6f85b49fd34ee58faf253d9e976a460153c
Reviewed-on: https://chromium-review.googlesource.com/1150873Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54794}

Reflect spec change in https://github.com/tc39/proposal-intl-relative-time/pull/81

Bug: v8:7992
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ic2153f8355b8380d2986b34d46eb6bb6771d4b59
Reviewed-on: https://chromium-review.googlesource.com/1154236Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54793}

Change-Id: I991686d6890909510d2a3e7101230995ff521063
Reviewed-on: https://chromium-review.googlesource.com/1152081Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#54792}

Tbr: cbruni@chromium.org
No-try: true
Change-Id: Ica8c64e0956d4ca362646814e675104f94e77fac
Reviewed-on: https://chromium-review.googlesource.com/1155585Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54791}

From the promotion code point of view, a ThinString being forwarded to
an ExternalString is exactly the same as an actual ExternalString being
forwarded to its promoted copy. These changes provide a way to disambiguate
both scenarios since they are different for external memory accounting.

Bug: chromium:867902
Change-Id: I6fd56ee5e0f8900318466108273ab26e936eb439
Reviewed-on: https://chromium-review.googlesource.com/1152975
Commit-Queue: Rodrigo Bruno <rfbpb@google.com>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54790}

R=ahaas@chromium.org
TEST=cctest/test-wasm-shared-engine

Change-Id: I1f1b643089206805bc88e8898db6bf94093291b5
Reviewed-on: https://chromium-review.googlesource.com/1154916Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54789}

The following are ready for iwyu:
- src/heap/mark-compact.h
- src/heap/objects-visiting.h

Bug: v8:7490
Change-Id: I4cb9b1146586adcef8c0e0cf187ca363fe6e9a8d
Reviewed-on: https://chromium-review.googlesource.com/1154970Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54788}

Fixes:
  src/parsing/parse-info.h
  src/parsing/preparsed-scope-data.h
  src/profiler/heap-profiler.h
  src/profiler/heap-snapshot-generator.h
  src/profiler/heap-snapshot-generator-inl.h'
  src/property.h
  src/prototype.h
  src/prototype-inl.h

Bug: v8:7754,v8:7490,v8:7965
Change-Id: Iba14292cdfbbaf29d5b989c16d579a1ee0edcc25
Reviewed-on: https://chromium-review.googlesource.com/1154967
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54787}

For technical reasons, we used to serialize off-heap trampolines with a
RelocInfo containing a single OFF_HEAP_TARGET entry. This RelocInfo was
never needed at runtime. It also ended up being somewhat misleading
because printing an embedded code object would show the OFF_HEAP_TARGET
entry (belonging to the trampoline) at the first 'real' instruction.

With this CL, we explicitly serialize an empty byte array as the reloc
info for each off-heap trampoline, i.e. the snapshot will never contain
such off-heap target reloc infos.

Bug: v8:6666, v8:7969
Change-Id: If6fa85a438d093ed5dcea07ce0de1db49a224d28
Reviewed-on: https://chromium-review.googlesource.com/1146643
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54786}

Bug: v8:7490
Change-Id: Id6e50a201732b4ca1fd1f69f8c43298e216ce95b
Reviewed-on: https://chromium-review.googlesource.com/1154788Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54785}

BUG=v8:7308

Change-Id: Ibf87a807202d8f1e0e7c095bf6b3790b0f0954bf
Reviewed-on: https://chromium-review.googlesource.com/1154907Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54784}

AdvanceUntil allows the Utf16CharacterStream to advance until a charater is found
that passes the check.

Bug: v8:7926
Change-Id: Iae39fb24194aa0ee2f544a55a7847956aa324b64
Reviewed-on: https://chromium-review.googlesource.com/1151303
Commit-Queue: Florian Sattler <sattlerf@google.com>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54783}