Plumb opener information when creating RenderFrames and RenderFrameProxies for subframes.

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 2013 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 CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 175 matching lines @@
   void AccessibilityHitTest(const gfx::Point& point) override;
   void AccessibilitySetAccessibilityFocus(int acc_obj_id) override;
   void AccessibilityFatalError() override;
   gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget() override;
   gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible() override;
 
   // Creates a RenderFrame in the renderer process.  Only called for
   // cross-process subframe navigations in --site-per-process.
   bool CreateRenderFrame(int parent_routing_id,
                          int previous_sibling_routing_id,
-                         int proxy_routing_id);
+                         int proxy_routing_id,
+                         int opener_routing_id);

[Charlie Reis, 2015/09/01 22:04:26]

Don't forget to update this order as well.

[alexmos, 2015/09/01 23:51:02]

Done.

 
   // Tracks whether the RenderFrame for this RenderFrameHost has been created in
   // the renderer process.  This is currently only used for subframes.
   // TODO(creis): Use this for main frames as well when RVH goes away.
   void SetRenderFrameCreated(bool created);
 
   // Called for renderer-created windows to resume requests from this frame,
   // after they are blocked in RenderWidgetHelper::CreateNewWindow.
   void Init();
 
@@ skipping 571 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_