Start using RenderFrameProxyHost objects.

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 274 matching lines @@
 // Sent in response to a FrameHostMsg_ContextMenu to let the renderer know that
 // the menu has been closed.
 IPC_MESSAGE_ROUTED1(FrameMsg_ContextMenuClosed,
                     content::CustomContextMenuContext /* custom_context */)
 
 // Executes custom context menu action that was provided from Blink.
 IPC_MESSAGE_ROUTED2(FrameMsg_CustomContextMenuAction,
                     content::CustomContextMenuContext /* custom_context */,
                     unsigned /* action */)
 
+// Instructs the renderer to create a new RenderFrame object with |routing_id|.
+// The new frame should be created as a child of the object idendified by
+// |parent_routing_id| or as top level if the id is MSG_ROUTING_NONE.
+IPC_MESSAGE_CONTROL2(FrameMsg_NewFrame,
+                     int /* routing_id */,
+                     int /* parent_routing_id */)
+
+// Instructs the renderer to create a new RenderFrameProxy object with
+// |routing_id|. The new proxy should be created as a child of the object
+// idendified by |parent_routing_id| or as top level if the id is
+// MSG_ROUTING_NONE.
+IPC_MESSAGE_CONTROL3(FrameMsg_NewFrameProxy,
+                     int /* routing_id */,
+                     int /* parent_routing_id */,
+                     int /* render_view_routing_id */)
+
 // Tells the renderer to perform the specified navigation, interrupting any
 // existing navigation.
 IPC_MESSAGE_ROUTED1(FrameMsg_Navigate, FrameMsg_Navigate_Params)
 
 // Instructs the renderer to invoke the frame's beforeunload event handler.
 // Expects the result to be returned via FrameHostMsg_BeforeUnload_ACK.
 IPC_MESSAGE_ROUTED0(FrameMsg_BeforeUnload)
 
 // Instructs the frame to swap out for a cross-site transition, including
 // running the unload event handler and creating a RenderFrameProxy with the
@@ skipping 320 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 */)