GuestView: Decouple extension IPCs from soon-to-be component IPCs

extensions/common/guest_view/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 GuestViews.
 // Multiply-included message file, hence no include guard.
 
-#include <string>
-
 #include "base/values.h"
 #include "ipc/ipc_message_macros.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/ipc/gfx_param_traits.h"
 
 #define IPC_MESSAGE_START GuestViewMsgStart
 
 // Messages sent from the browser to the renderer.
 
-// The ACK for GuestViewHostMsg_CreateMimeHandlerViewGuest.
-IPC_MESSAGE_CONTROL1(GuestViewMsg_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.
-IPC_MESSAGE_CONTROL1(GuestViewMsg_MimeHandlerViewGuestOnLoadCompleted,
-                     int /* element_instance_id */)
-
 // Once a RenderView proxy has been created for the guest in the embedder render
 // process, this IPC informs the embedder of the proxy's routing ID.
 IPC_MESSAGE_CONTROL2(GuestViewMsg_GuestAttached,
                      int /* element_instance_id */,
                      int /* source_routing_id */)
 
 // This IPC tells the browser process to detach the provided
 // |element_instance_id| from a GuestViewBase if it is attached to one.
 // In other words, routing of input and graphics will no longer flow through
 // the container associated with the provided ID.
 IPC_MESSAGE_CONTROL1(GuestViewMsg_GuestDetached,
                      int /* element_instance_id*/)
 
 // Messages sent from the renderer to the browser.
 
 // Sent by the renderer to set initialization parameters of a Browser Plugin
 // that is identified by |element_instance_id|.
 IPC_MESSAGE_CONTROL3(GuestViewHostMsg_AttachGuest,
                      int /* element_instance_id */,
                      int /* guest_instance_id */,
                      base::DictionaryValue /* attach_params */)
-
-// Tells the browser to create a mime handler guest view for a plugin.
-IPC_MESSAGE_CONTROL4(GuestViewHostMsg_CreateMimeHandlerViewGuest,
-                     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(GuestViewHostMsg_ResizeGuest,
-                     int /* routing_id */,
-                     int /* element_instance_id*/,
-                     gfx::Size /* new_size */)
-
-IPC_SYNC_MESSAGE_CONTROL2_1(GuestViewHostMsg_CanExecuteContentScriptSync,
-                            int /* routing_id */,
-                            int /* script_id */,
-                            bool /* allowed */)