[Experimental, WIP] Demo version of extracting WebView selection data from CompositorFrame.

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 1140 matching lines @@
 IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateRect,
                     ViewHostMsg_UpdateRect_Params)
 
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Focus)
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Blur)
 
 // Message sent from renderer to the browser when focus changes inside the
 // webpage. The first parameter says whether the newly focused element needs
 // keyboard input (true for textfields, text areas and content editable divs).
 // The second parameter is the node bounds relative to RenderWidgetHostView.
-IPC_MESSAGE_ROUTED2(ViewHostMsg_FocusedNodeChanged,
+IPC_MESSAGE_ROUTED3(ViewHostMsg_FocusedNodeChanged,
                     bool /* is_editable_node */,
+                    bool /* is_plugin_node */,
                     gfx::Rect /* node_bounds */)
 
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SetCursor, content::WebCursor)
 
 // Used to get the list of plugins
 IPC_SYNC_MESSAGE_CONTROL1_1(ViewHostMsg_GetPlugins,
     bool /* refresh*/,
     std::vector<content::WebPluginInfo> /* plugins */)
 
 #if defined(OS_WIN)
@@ skipping 438 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.