[Bindings] Create and use V8 context snapshots

third_party/WebKit/public/platform/Platform.h

Index: third_party/WebKit/public/platform/Platform.h
diff --git a/third_party/WebKit/public/platform/Platform.h b/third_party/WebKit/public/platform/Platform.h
index cc072e9bc6ca532f0c3536c892911f293a0d4818..17129cb67c54a2f51c45f100438e46aedd708cb8 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -693,6 +693,10 @@ class BLINK_PLATFORM_EXPORT Platform {
   // depending on memory pressure.
   virtual void RequestPurgeMemory() {}
 
+  // V8 Context Snapshot --------------------------------------------------
+
+  virtual bool IsToTakeV8Snapshot() { return false; }
+
   // Feature Policy -----------------------------------------------------
 
   // Create a new feature policy object for a document, given its parent