Plumb opener information when creating RenderFrames and RenderFrameProxies for subframes.

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 "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
 #include "content/common/content_export.h"
@@ skipping 304 matching lines @@
   IPC_STRUCT_MEMBER(int, surface_id)
 
   // Tells the new RenderWidget whether it is initially hidden.
   IPC_STRUCT_MEMBER(bool, hidden)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(FrameMsg_NewFrame_Params)
   // Specifies the routing ID of the new RenderFrame object.
   IPC_STRUCT_MEMBER(int, routing_id)
 
+  // If a valid |proxy_routing_id| is provided, the new frame will be
+  // configured to replace the proxy on commit.
+  IPC_STRUCT_MEMBER(int, proxy_routing_id)
+
+  // Specifies the new frame's opener.  The opener will be null if this is
+  // MSG_ROUTING_NONE.
+  IPC_STRUCT_MEMBER(int, opener_routing_id)
+
   // The new frame should be created as a child of the object
   // identified by |parent_routing_id| or as top level if that is
   // MSG_ROUTING_NONE.
   IPC_STRUCT_MEMBER(int, parent_routing_id)
 
   // Identifies the previous sibling of the new frame, so that the new frame is
   // inserted into the correct place in the frame tree.  If this is
   // MSG_ROUTING_NONE, the frame will be created as the leftmost child of its
   // parent frame, in front of any other children.
   IPC_STRUCT_MEMBER(int, previous_sibling_routing_id)
 
-  // If a valid |proxy_routing_id| is provided, the new frame will be
-  // configured to replace the proxy on commit.
-  IPC_STRUCT_MEMBER(int, proxy_routing_id)
-
   // When the new frame has a parent, |replication_state| holds the new frame's
   // properties replicated from the process rendering the parent frame, such as
   // the new frame's sandbox flags.
   IPC_STRUCT_MEMBER(content::FrameReplicationState, replication_state)
 
   // Specifies properties for a new RenderWidget that will be attached to the
   // new RenderFrame (if one is needed).
   IPC_STRUCT_MEMBER(FrameMsg_NewFrame_WidgetParams, widget_params)
 IPC_STRUCT_END()
 
@@ skipping 96 matching lines @@
 IPC_MESSAGE_ROUTED1(FrameMsg_UpdateOpener, int /* opener_routing_id */)
 
 // Requests that the RenderFrame send back a response after waiting for the
 // commit, activation and frame swap of the current DOM tree in blink.
 IPC_MESSAGE_ROUTED1(FrameMsg_VisualStateRequest, uint64 /* id */)
 
 // Instructs the renderer to create a new RenderFrame object.
 IPC_MESSAGE_CONTROL1(FrameMsg_NewFrame, FrameMsg_NewFrame_Params /* params */)
 
 // Instructs the renderer to create a new RenderFrameProxy object with
-// |routing_id|. The new proxy should be created as a child of the object
-// identified by |parent_routing_id| or as top level if that is
+// |routing_id|.  |render_view_routing_id| identifies the
+// RenderView to be associated with this proxy.  The new proxy's opener should
+// be set to the object identified by |opener_routing_id|, or to null if that
+// is MSG_ROUTING_NONE.  The new proxy should be created as a child of the
+// object identified by |parent_routing_id| or as top level if that is
 // MSG_ROUTING_NONE.
-IPC_MESSAGE_CONTROL4(FrameMsg_NewFrameProxy,
+IPC_MESSAGE_CONTROL5(FrameMsg_NewFrameProxy,
                      int /* routing_id */,
+                     int /* render_view_routing_id */,
+                     int /* opener_routing_id */,
                      int /* parent_routing_id */,
-                     int /* render_view_routing_id */,
                      content::FrameReplicationState /* replication_state */)
 
 // Tells the renderer to perform the specified navigation, interrupting any
 // existing navigation.
 IPC_MESSAGE_ROUTED3(FrameMsg_Navigate,
                     content::CommonNavigationParams, /* common_params */
                     content::StartNavigationParams,  /* start_params */
                     content::RequestNavigationParams /* request_params */)
 
 // Instructs the renderer to invoke the frame's beforeunload event handler.
@@ skipping 546 matching lines @@
                     FrameMsg_PostMessage_Params)
 
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 
 // Message to show/hide a popup menu using native controls.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif