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

This is a reland of 957854dd
Relanding now that pdfium has been fixed when non-standard flags are used.

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.
> > >
> > > Reviewed-on: https://chromium-review.googlesource.com/1172350

TBR=yangguo@chromium.org

Bug: v8:7786
Change-Id: Ic877155da3e4b280cc48e7dca9dc8dd78667a3d8
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/1177861Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55309}

src/isolate.cc

@@ -2224,14 +2224,6 @@ 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

@@ -958,10 +958,6 @@ 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);
@@ -1879,9 +1875,6 @@ 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);
 };