OOPIF: Data URLs are now rendered in the renderer that initiated the navigation.

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 253 matching lines @@
   // function takes ownership of the provided message pointer.
   //
   // If a cross-site request is in progress, we may be suspended while waiting
   // for the onbeforeunload handler, so this function might buffer the message
   // rather than sending it.
   void Navigate(const FrameMsg_Navigate_Params& params);
 
   // Load the specified URL; this is a shortcut for Navigate().
   void NavigateToURL(const GURL& url);
 
-  // Treat this prospective navigation as thought it originated from the
-  // frame. Used, e.g., for a navigation request that originated from
-  // a RemoteFrame.
-  void OpenURL(const FrameHostMsg_OpenURL_Params& params);
+  // Treat this prospective navigation as though it originated from the frame.
+  // Used, e.g., for a navigation request that originated from a RemoteFrame.
+  // |source_site_instance| is the SiteInstance of the frame that initiated the
+  // navigation.
+  // TODO(creis): Remove this method and have RenderFrameProxyHost call
+  // RequestOpenURL with its FrameTreeNode.
+  void OpenURL(const FrameHostMsg_OpenURL_Params& params,
+               SiteInstance* source_site_instance);
 
   // Stop the load in progress.
   void Stop();
 
   // Returns whether navigation messages are currently suspended for this
   // RenderFrameHost. Only true during a cross-site navigation, while waiting
   // for the onbeforeunload handler.
   bool are_navigations_suspended() const { return navigations_suspended_; }
 
   // Suspends (or unsuspends) any navigation messages from being sent from this
@@ skipping 325 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_