[Bindings] Create and use V8 context snapshots

third_party/WebKit/public/web/WebSnapshotCreator.h

Index: third_party/WebKit/public/web/WebSnapshotCreator.h
diff --git a/third_party/WebKit/public/web/WebSnapshotCreator.h b/third_party/WebKit/public/web/WebSnapshotCreator.h
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index 0000000000000000000000000000000000000000..8de2164349536dae8d02c7aba81eab303df57acc
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+++ b/third_party/WebKit/public/web/WebSnapshotCreator.h
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+// 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.
+
+#ifndef WebSnapshotCreator_h
+#define WebSnapshotCreator_h
+
+#include "public/platform/WebCommon.h"
+#include "v8/include/v8.h"
+
+namespace blink {
+
+class BLINK_EXPORT WebSnapshotCreator {
+ public:
+  static v8::StartupData TakeSnapshot();
+};
+
+}  // namespace blink
+
+#endif  // WebSnapshotCreator_h