[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 4d390c1bed3e83fc28af863124e607e261d38e41..a8df1ccd4ab00d515ead316992b6a0f50e652609 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -701,6 +701,10 @@ class BLINK_PLATFORM_EXPORT Platform {
   // depending on memory pressure.
   virtual void RequestPurgeMemory() {}
 
+  // V8 Context Snapshot --------------------------------------------------
+
+  virtual bool IsTakingV8ContextSnapshot() { return false; }

[haraken, 2017/07/10 06:52:09]

// This method returns true only when
tools/v8_context_snapshot/v8_context_snapshot_generator is running (which runs
during Chromium's build step).

[peria, 2017/07/10 10:18:44]

Done.

+
   // Feature Policy -----------------------------------------------------
 
   // Create a new feature policy object for a document, given its parent