[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 e73d307014aae0c4384580b9ff7a099ef35e8710..3542d99d88cc2b1dc6429642ae651ad66fb53caf 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8Initializer.cpp
@@ -40,6 +40,7 @@
 #include "bindings/core/v8/V8ErrorHandler.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8IdleTaskRunner.h"
+#include "bindings/core/v8/V8SnapshotUtil.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
@@ -388,6 +389,9 @@ static void InitializeV8Common(v8::Isolate* isolate) {
   isolate->SetUseCounterCallback(&UseCounterCallback);
   isolate->SetWasmModuleCallback(WasmModuleOverride);
   isolate->SetWasmInstanceCallback(WasmInstanceOverride);
+
+  v8::HandleScope handle_scope(isolate);

[haraken, 2017/07/04 15:04:19]

Can we move the HandleScope into EnsureInterfaceTemplates?

[peria, 2017/07/07 06:21:54]

Done.

+  V8SnapshotUtil::EnsureInterfaceTemplates(isolate);
 }
 
 namespace {
@@ -449,7 +453,11 @@ void V8Initializer::InitializeMainThread() {
   // TODO(altimin): Consider switching to timerTaskRunner here.
   v8::Isolate* isolate = V8PerIsolateData::Initialize(
       scheduler ? scheduler->LoadingTaskRunner()
-                : Platform::Current()->CurrentThread()->GetWebTaskRunner());
+                : Platform::Current()->CurrentThread()->GetWebTaskRunner(),
+      V8SnapshotUtil::GetReferenceTable(),
+      Platform::Current()->IsToTakeV8Snapshot()
+          ? V8PerIsolateData::V8ContextMode::kTakeSnapshot
+          : V8PerIsolateData::V8ContextMode::kUseSnapshot);
 
   InitializeV8Common(isolate);