[chromium-reviews] Add getLanguage function to tabs extension

chrome/common/render_messages_internal.h

 // Copyright (c) 2009 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <string>
 #include <vector>
@@ skipping 173 matching lines @@
   // handle is valid in the context of the renderer.
   IPC_MESSAGE_CONTROL1(ViewMsg_UserScripts_UpdatedScripts,
                        base::SharedMemoryHandle)
 
   // Sent when the user wants to search for a word on the page (find in page).
   IPC_MESSAGE_ROUTED3(ViewMsg_Find,
                       int /* request_id */,
                       string16 /* search_text */,
                       WebKit::WebFindOptions)
 
+  // Send from the browser to the rendered to get the text content of the page.
+  IPC_MESSAGE_ROUTED0(ViewMsg_DeterminePageText)
+
+  // Send from the renderer to the browser to return the text content of the
+  // page.
+  IPC_MESSAGE_ROUTED1(ViewMsg_DeterminePageText_Reply,
+                      std::wstring /* the language */)
+
   // Sent when the headers are available for a resource request.
   IPC_MESSAGE_ROUTED2(ViewMsg_Resource_ReceivedResponse,
                       int /* request_id */,
                       ResourceResponseHead)
 
   // Sent as download progress is being made, size of the resource may be
   // unknown, in that case |size| is -1.
   IPC_MESSAGE_ROUTED3(ViewMsg_Resource_DownloadProgress,
                       int /* request_id */,
                       int64 /* position */,
@@ skipping 1268 matching lines @@
   // web resource.  |error_message| is a user-readable explanation of what
   // went wrong.
   IPC_MESSAGE_CONTROL1(UtilityHostMsg_UnpackWebResource_Failed,
                        std::string /* error_message, if any */)
 
   // Sent by the renderer process to acknowledge receipt of a
   // ViewMsg_CSSInsertRequest message and css has been inserted into the frame.
   IPC_MESSAGE_ROUTED0(ViewHostMsg_OnCSSInserted)
 
 IPC_END_MESSAGES(ViewHost)