Plumb initiator out of Blink.

third_party/WebKit/public/web/WebRemoteFrameClient.h

 // Copyright 2014 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 WebRemoteFrameClient_h
 #define WebRemoteFrameClient_h
 
 #include "public/platform/WebFocusType.h"
 #include "public/platform/WebSecurityOrigin.h"
 #include "public/web/WebDOMMessageEvent.h"
@@ skipping 13 matching lines @@
   // and release any resources associated with it.
   virtual void frameDetached(DetachType) {}
 
   // Notifies the embedder that a postMessage was issued to a remote frame.
   virtual void forwardPostMessage(WebLocalFrame* sourceFrame,
                                   WebRemoteFrame* targetFrame,
                                   WebSecurityOrigin targetOrigin,
                                   WebDOMMessageEvent) {}
 
   // A remote frame was asked to start a navigation.
-  virtual void navigate(const WebURLRequest& request,
+  virtual void navigate(WebLocalFrame* initiatorFrame,
+                        const WebURLRequest& request,
                         bool shouldReplaceCurrentEntry) {}
   virtual void reload(WebFrameLoadType, WebClientRedirectPolicy) {}
 
   virtual void frameRectsChanged(const WebRect&) {}
 
   virtual void updateRemoteViewportIntersection(
       const WebRect& viewportIntersection) {}
 
   virtual void visibilityChanged(bool visible) {}
 
   // This frame updated its opener to another frame.
   virtual void didChangeOpener(WebFrame* opener) {}
 
   // Continue sequential focus navigation in this frame.  This is called when
   // the |source| frame is searching for the next focusable element (e.g., in
   // response to <tab>) and encounters a remote frame.
   virtual void advanceFocus(WebFocusType type, WebLocalFrame* source) {}
 
   // This frame was focused by another frame.
   virtual void frameFocused() {}
 };
 
 }  // namespace blink
 
 #endif  // WebRemoteFrameClient_h