Correctly find root RWHV from a nested WebContents

content/browser/frame_host/render_frame_host_manager.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_MANAGER_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 
 #include <list>
 #include <map>
 
@@ skipping 214 matching lines @@
   // Returns whether this manager belongs to a FrameTreeNode that belongs to an
   // inner WebContents.
   bool ForInnerDelegate();
 
   // Returns the RenderWidgetHost of the outer WebContents (if any) that can be
   // used to fetch the last keyboard event.
   // TODO(lazyboy): This can be removed once input events are sent directly to
   // remote frames.
   RenderWidgetHostImpl* GetOuterRenderWidgetHostForKeyboardInput();
 
+  // Return the FrameTreeNode for the frame in the outer WebContents (if any)
+  // that contains the inner WebContents.
+  FrameTreeNode* GetOuterDelegateNode();
+
   RenderFrameProxyHost* GetProxyToParent();
 
   // Returns the proxy to inner WebContents in the outer WebContents's
   // SiteInstance. Returns nullptr if this WebContents isn't part of inner/outer
   // relationship.
   RenderFrameProxyHost* GetProxyToOuterDelegate();
 
   // Removes the FrameTreeNode in the outer WebContents that represents this
   // FrameTreeNode.
   // TODO(lazyboy): This does not belong to RenderFrameHostManager, move it to
@@ skipping 581 matching lines @@
   bool should_reuse_web_ui_;
 
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_