Make <webview> use out-of-process iframe architecture.

content/common/view_messages.h

 // Copyright (c) 2012 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 page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 517 matching lines @@
   IPC_STRUCT_MEMBER(ViewMsg_Resize_Params, initial_size)
 
   // Whether to enable auto-resize.
   IPC_STRUCT_MEMBER(bool, enable_auto_resize)
 
   // The minimum size to layout the page if auto-resize is enabled.
   IPC_STRUCT_MEMBER(gfx::Size, min_size)
 
   // The maximum size to layout the page if auto-resize is enabled.
   IPC_STRUCT_MEMBER(gfx::Size, max_size)
+
+  // Whether the RenderView is for a guest.
+  // TODO(lazyboy): Remove once we can use RFP to route postMessage.

[Charlie Reis, 2015/04/30 23:06:47]

I think that's already possible.  Check with alexmos@.

[lazyboy, 2015/05/05 07:28:15]

The comment was a bit misleading, this is required until we can create a RFP
without
a swapped out RV, fixed comment.

+  IPC_STRUCT_MEMBER(bool, is_guest)
 IPC_STRUCT_END()
 
 // Messages sent from the browser to the renderer.
 
 #if defined(OS_ANDROID)
 // Tells the renderer to cancel an opened date/time dialog.
 IPC_MESSAGE_ROUTED0(ViewMsg_CancelDateTimeDialog)
 
 // Replaces a date time input field.
 IPC_MESSAGE_ROUTED1(ViewMsg_ReplaceDateTime,
@@ skipping 1082 matching lines @@
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             base::string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.