Separate gfx_ipc into skia-dependent and non-skia-dependent parts

extensions/common/guest_view/extensions_guest_view_messages.h

 // Copyright 2015 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 extensions GuestViews.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/ipc/gfx_param_traits.h"
+#include "ui/gfx/ipc/gfx_skia_param_traits.h"

[Devlin, 2016/03/28 21:01:51]

Is skia needed here?

[Mark Dittmer, 2016/03/29 17:41:24]

Done.

 
 #define IPC_MESSAGE_START ExtensionsGuestViewMsgStart
 // Messages sent from the browser to the renderer.
 
 // The ACK for GuestViewHostMsg_CreateMimeHandlerViewGuest.
 IPC_MESSAGE_CONTROL1(ExtensionsGuestViewMsg_CreateMimeHandlerViewGuestACK,
                      int /* element_instance_id */)
 
 // Once a MimeHandlerView guest's JavaScript onload function has been called,
 // this IPC is sent to the container to notify it.
@@ skipping 15 matching lines @@
                      int /* render_frame_id */,
                      std::string /* view_id */,
                      int /* element_instance_id */,
                      gfx::Size /* element_size */)
 
 // A renderer sends this message when it wants to resize a guest.
 IPC_MESSAGE_CONTROL3(ExtensionsGuestViewHostMsg_ResizeGuest,
                      int /* routing_id */,
                      int /* element_instance_id*/,
                      gfx::Size /* new_size */)