[Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/core/exported/WebV8ContextSnapshot.cpp

Index: third_party/WebKit/Source/core/exported/WebV8ContextSnapshot.cpp
diff --git a/third_party/WebKit/Source/core/exported/WebV8ContextSnapshot.cpp b/third_party/WebKit/Source/core/exported/WebV8ContextSnapshot.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..340f78cc5fda0821ef9d75a7834029bd66681315
--- /dev/null
+++ b/third_party/WebKit/Source/core/exported/WebV8ContextSnapshot.cpp
@@ -0,0 +1,16 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "public/web/WebV8ContextSnapshot.h"
+
+#include "bindings/core/v8/V8ContextSnapshot.h"
+#include "v8/include/v8.h"
+
+namespace blink {
+
+v8::StartupData WebV8ContextSnapshot::TakeSnapshot() {
+  return V8ContextSnapshot::TakeSnapshot();
+}
+
+}  // namespace blink