[DO NOT REVIEW][DO NOT COMMIT] Implement WebDataProducerHandleImpl.

content/child/blink_platform_impl.h

Index: content/child/blink_platform_impl.h
diff --git a/content/child/blink_platform_impl.h b/content/child/blink_platform_impl.h
index 46f39c426beb94015f20989bf26953e64febb094..4cb0e4c0d85336755c344b7a0a023773d9f62d0f 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -157,6 +157,9 @@ class CONTENT_EXPORT BlinkPlatformImpl
   virtual blink::WebNotificationManager* notificationManager();
   virtual blink::WebPushProvider* pushProvider();
   virtual blink::WebNavigatorConnectProvider* navigatorConnectProvider();
+  virtual bool createDataPipe(const blink::WebCreateDataPipeOptions*,
+                              blink::WebDataProducerHandle**,
+                              blink::WebDataConsumerHandle**);
 
   void SuspendSharedTimer();
   void ResumeSharedTimer();