Revert of Start using RenderFrameProxyHost objects.

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index beeb7b70af62fbe5a253846af286ec07d62d2c43..a28b7dd1cef41fc6246966aa08c9c016ff023708 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -344,22 +344,6 @@
                     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 identified by
-// |parent_routing_id| or as top level if that 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
-// identified by |parent_routing_id| or as top level if that 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)