This makes sure that only the "asm-js.h" header is exposed to outside
the directory holding the asm.js validator. It ensures that internals
don't leak out of that component, unless they are explicitly exposed
through the defined interface.

R=clemensh@chromium.org
BUG=v8:6127

Change-Id: I7c41782254cfce102af8edf4356205cfca904e60
Reviewed-on: https://chromium-review.googlesource.com/496147Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45125}

R=machenbach@chromium.org,titzer@chromium.org,bmeurer@chromium.org,jgruber@chromium.org
BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_win_dbg,v8_mac_dbg;master.tryserver.chromium.android:android_arm64_dbg_recipe

Review-Url: https://codereview.chromium.org/2416243002
Cr-Commit-Position: refs/heads/master@{#40350}

R=bradnelson@chromium.org,aseemgarg@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2408823002
Cr-Commit-Position: refs/heads/master@{#40135}

This is some initial cleanup to keep /src clean. The
AccountingAllocator is actually exclusively used by zones and this
common subfolder makes that more clear.

BUG=v8:5409

Review-Url: https://codereview.chromium.org/2344143003
Cr-Commit-Position: refs/heads/master@{#39558}

This change implements switch as a balanced if/else tree or break table or
hybrid. A lot of asm.js modules are expected to extensively use switch
alongside function tables that can benefit from a better implementation.

BUG=v8:4203
TEST=mjsunit/asm-wasm
R=titzer@chromium.org,bradnelson@chromium.org,ahaas@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1838973002

Cr-Commit-Position: refs/heads/master@{#35455}