Make RenderFrame(Host) own a RenderWidget(Host).

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 f4b08258ba9aefd3c76491428158f2c42009ff79..92a02480b75300f1684fd16415ca9d3afd73515e 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -173,6 +173,19 @@ IPC_STRUCT_BEGIN_WITH_PARENT(FrameHostMsg_DidCommitProvisionalLoad_Params,
   IPC_STRUCT_MEMBER(int, render_view_routing_id)
 IPC_STRUCT_END()
 
+IPC_STRUCT_BEGIN(FrameMsg_NewFrame_WidgetParams)
+  // Gives the routing ID for the RenderWidget that will be attached to the
+  // new RenderFrame. If the RenderFrame does not need a RenderWidget, this
+  // is MSG_ROUTING_NONE and the other parameters are not read.
+  IPC_STRUCT_MEMBER(int, routing_id)
+
+  // Identifier for the output surface for the new RenderWidget.
+  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_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
@@ -368,9 +381,10 @@ IPC_MESSAGE_ROUTED0(FrameMsg_DisownOpener)
 // 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,
+IPC_MESSAGE_CONTROL3(FrameMsg_NewFrame,
                      int /* routing_id */,
-                     int /* parent_routing_id */)
+                     int /* parent_routing_id */,
+                     FrameMsg_NewFrame_WidgetParams /* params */)

[nasko, 2014/10/02 20:41:44]

nit: widget_params

[kenrb, 2014/10/03 17:23:32]

Done.

 
 // Instructs the renderer to create a new RenderFrameProxy object with
 // |routing_id|. The new proxy should be created as a child of the object