[Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
index 6b902633af6d7c9abac5e23d479646e620a486d7..28b0c9f7a5946da64a937c0856f2f56800b85a82 100644
--- a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
@@ -9,6 +9,7 @@
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8IdleTaskRunner.h"
 #include "bindings/core/v8/V8Initializer.h"
+#include "bindings/core/v8/V8SnapshotCreator.h"
 #include "core/inspector/WorkerThreadDebugger.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ -62,7 +63,8 @@ void WorkerBackingThread::Initialize() {
   DCHECK(!isolate_);
   backing_thread_->Initialize();
   isolate_ = V8PerIsolateData::Initialize(
-      backing_thread_->PlatformThread().GetWebTaskRunner());
+      backing_thread_->PlatformThread().GetWebTaskRunner(),
+      V8SnapshotCreator::GetReferenceTable(), gin::IsolateHolder::kUseSnapshot);

[haraken, 2017/05/20 19:10:03]

gin::IsolateHolder::kUseSnapshot won't make sense because we don't use the
context snapshot on worker global scopes, right?

[peria, 2017/05/30 08:25:44]

Done.

   AddWorkerIsolate(isolate_);
   V8Initializer::InitializeWorker(isolate_);