Revert "Reland "[cleanup] Reland: Remove deprecated functions""

This reverts commit 957854dd.

Reason for revert: breaks fuzzing builds => blocks rolling, crbug.com/874440

Original change's description:
> Reland "[cleanup] Reland: Remove deprecated functions"
> 
> This reverts commit 717b9385.
> 
> Reason for revert: Cast build is now fixed
> 
> Original change's description:
> > Revert "[cleanup] Reland: Remove deprecated functions"
> > 
> > This reverts commit c8376b00.
> > 
> > Reason for revert: Still borked: https://ci.chromium.org/p/chromium/builders/luci.chromium.try/cast_shell_linux/114796
> > 
> > Original change's description:
> > > [cleanup] Reland: Remove deprecated functions
> > > 
> > > This is reland of https://chromium-review.googlesource.com/c/v8/v8/+/1154915
> > > with no changes since the break in chromium for ChromeOS is now fixed.
> > > 
> > > Removes all V8_DEPRECATED functions that weren't recently marked as well
> > > any V8_DEPRECATE_SOON function that relied on using using the address of
> > > an object to get hold of the Isolate.
> > > 
> > > Bug: v8:7786
> > > Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;luci.chromium.try:linux-chromeos-dbg;luci.chromium.try:linux-chromeos-rel
> > > Change-Id: Ib62d38b9201fd0dab719948cb5ae5a0a164f7013
> > > Reviewed-on: https://chromium-review.googlesource.com/1172350
> > > Reviewed-by: Yang Guo <yangguo@chromium.org>
> > > Commit-Queue: Dan Elphick <delphick@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#55119}
> > 
> > TBR=yangguo@chromium.org,delphick@chromium.org
> > 
> > Change-Id: Id1308a694092acfc90a3e7183d66c002feb63999
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Bug: v8:7786
> > Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;luci.chromium.try:linux-chromeos-dbg;luci.chromium.try:linux-chromeos-rel
> > Reviewed-on: https://chromium-review.googlesource.com/1174751
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#55127}
> 
> TBR=yangguo@chromium.org,leszeks@chromium.org,delphick@chromium.org
> 
> Change-Id: Id65dae1abdad6f854afec9eb59ed2bddd9246f79
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:7786
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;luci.chromium.try:linux-chromeos-dbg;luci.chromium.try:linux-chromeos-rel
> Reviewed-on: https://chromium-review.googlesource.com/1175721
> Reviewed-by: Dan Elphick <delphick@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55136}

TBR=yangguo@chromium.org,leszeks@chromium.org,delphick@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:7786
Change-Id: I5dc792a3a1c986b8609487ca6ad1e485a8940521
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng;luci.chromium.try:linux-chromeos-dbg;luci.chromium.try:linux-chromeos-rel
Reviewed-on: https://chromium-review.googlesource.com/1177661Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55167}

src/isolate.cc

@@ -2223,6 +2223,14 @@ bool Isolate::AreWasmThreadsEnabled(Handle<Context> context) {
   return FLAG_experimental_wasm_threads;
 }
 
+Handle<Context> Isolate::GetCallingNativeContext() {
+  JavaScriptFrameIterator it(this);
+  if (it.done()) return Handle<Context>::null();
+  JavaScriptFrame* frame = it.frame();
+  Context* context = Context::cast(frame->context());
+  return Handle<Context>(context->native_context(), this);
+}
+
 Handle<Context> Isolate::GetIncumbentContext() {
   JavaScriptFrameIterator it(this);
 

src/isolate.h

@@ -958,6 +958,10 @@ class Isolate : private HiddenFactory {
   inline Handle<Context> native_context();
   inline Context* raw_native_context();
 
+  // Returns the native context of the calling JavaScript code.  That
+  // is, the native context of the top-most JavaScript frame.
+  Handle<Context> GetCallingNativeContext();
+
   Handle<Context> GetIncumbentContext();
 
   void RegisterTryCatchHandler(v8::TryCatch* that);
@@ -1873,6 +1877,9 @@ class Isolate : private HiddenFactory {
   friend class v8::Locker;
   friend class v8::SnapshotCreator;
   friend class v8::Unlocker;
+  friend v8::StartupData v8::V8::CreateSnapshotDataBlob(const char*);
+  friend v8::StartupData v8::V8::WarmUpSnapshotDataBlob(v8::StartupData,
+                                                        const char*);
 
   DISALLOW_COPY_AND_ASSIGN(Isolate);
 };