Revert of [Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp b/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
index 0847a406c0bfdb659519bdf16a413b2ef6dc653a..29bbbaf414cfbe2ae0fe190010e3d9d94aa57640 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
@@ -35,7 +35,6 @@
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/UseCounterCallback.h"
 #include "bindings/core/v8/V8BindingForCore.h"
-#include "bindings/core/v8/V8ContextSnapshot.h"
 #include "bindings/core/v8/V8DOMException.h"
 #include "bindings/core/v8/V8ErrorEvent.h"
 #include "bindings/core/v8/V8ErrorHandler.h"
@@ -389,8 +388,6 @@
   isolate->SetUseCounterCallback(&UseCounterCallback);
   isolate->SetWasmModuleCallback(WasmModuleOverride);
   isolate->SetWasmInstanceCallback(WasmInstanceOverride);
-
-  V8ContextSnapshot::EnsureInterfaceTemplates(isolate);
 }
 
 namespace {
@@ -464,7 +461,7 @@
   v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(diff);
 }
 
-void V8Initializer::InitializeMainThread(intptr_t* reference_table) {
+void V8Initializer::InitializeMainThread() {
   DCHECK(IsMainThread());
 
   WTF::ArrayBufferContents::Initialize(AdjustAmountOfExternalAllocatedMemory);
@@ -478,28 +475,13 @@
 
   // NOTE: Some threads (namely utility threads) don't have a scheduler.
   WebScheduler* scheduler = Platform::Current()->CurrentThread()->Scheduler();
-
-  V8PerIsolateData::V8ContextSnapshotMode v8_context_snapshot_mode =
-      Platform::Current()->IsTakingV8ContextSnapshot()
-          ? V8PerIsolateData::V8ContextSnapshotMode::kTakeSnapshot
-          : V8PerIsolateData::V8ContextSnapshotMode::kUseSnapshot;
-  if (v8_context_snapshot_mode ==
-          V8PerIsolateData::V8ContextSnapshotMode::kUseSnapshot &&
-      !RuntimeEnabledFeatures::V8ContextSnapshotEnabled()) {
-    v8_context_snapshot_mode =
-        V8PerIsolateData::V8ContextSnapshotMode::kDontUseSnapshot;
-    reference_table = nullptr;
-  }
-  V8ContextSnapshot::SetReferenceTable(reference_table);
-
   // When timer task runner is used for PerIsolateData, GC tasks are getting
   // throttled and memory usage goes up. For now we're using loading task queue
   // to prevent this.
   // TODO(altimin): Consider switching to timerTaskRunner here.
   v8::Isolate* isolate = V8PerIsolateData::Initialize(
       scheduler ? scheduler->LoadingTaskRunner()
-                : Platform::Current()->CurrentThread()->GetWebTaskRunner(),
-      reference_table, v8_context_snapshot_mode);
+                : Platform::Current()->CurrentThread()->GetWebTaskRunner());
 
   InitializeV8Common(isolate);