Added the RenderView routing_id to the DidCommitProvisionalLoad message.

content/common/frame_messages.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.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/frame_message_enums.h"
@@ skipping 133 matching lines @@
 
   // Original request's URL.
   IPC_STRUCT_MEMBER(GURL, original_request_url)
 
   // User agent override used to navigate.
   IPC_STRUCT_MEMBER(bool, is_overriding_user_agent)
 
   // Notifies the browser that for this navigation, the session history was
   // successfully cleared.
   IPC_STRUCT_MEMBER(bool, history_list_was_cleared)
+
+  // The routing_id of the render view associated with the navigation.
+  // We need to track the RenderViewHost routing_id because of downstream
+  // dependencies on being able to look up the view based on the ID stored
+  // in the resource requests (without it a lot of things break).  Once
+  // those dependencies are unwound or moved to RenderViewHost we can move

[nasko, 2014/07/21 13:11:23]

Did you mean RenderFrameHost here and the line below?

+  // the client to be based on the routing_id of the RenderViewHost
+  // instead (see crbug.com/392171).
+  IPC_STRUCT_MEMBER(int, render_view_routing_id)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_Navigate_Params)
   // The page_id for this navigation, or -1 if it is a new navigation.  Back,
   // Forward, and Reload navigations should have a valid page_id.  If the load
   // succeeds, then this page_id will be reflected in the resultant
   // FrameHostMsg_DidCommitProvisionalLoad message.
   IPC_STRUCT_MEMBER(int32, page_id)
 
   // If page_id is -1, then pending_history_list_offset will also be -1.
@@ skipping 444 matching lines @@
 // |endOffset| are the offsets of the selection in the returned |content|.
 IPC_MESSAGE_ROUTED3(FrameHostMsg_TextSurroundingSelectionResponse,
                     base::string16,  /* content */
                     size_t, /* startOffset */
                     size_t /* endOffset */)
 
 // Notifies the browser that the renderer has a pending navigation transition.
 IPC_MESSAGE_CONTROL2(FrameHostMsg_SetHasPendingTransitionRequest,
                      int /* render_frame_id */,
                      bool /* is_transition */)