Relanding the language detection.

chrome/browser/renderer_host/render_view_host_delegate.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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 199 matching lines @@
     // BrowserIntegration callbacks, feel free to move it elsewhere.
     virtual void OnCrashedPlugin(const FilePath& plugin_path) = 0;
 
     // Notification that a worker process has crashed.
     virtual void OnCrashedWorker() = 0;
 
     // Notification that a request for install info has completed.
     virtual void OnDidGetApplicationInfo(
         int32 page_id,
         const webkit_glue::WebApplicationInfo& app_info) = 0;
+
+    // Notification that the contents of the page has been loaded.
+    virtual void OnPageContents(const GURL& url,
+                                int renderer_process_id,
+                                int32 page_id,
+                                const std::wstring& contents) = 0;
   };
 
   // Resource ------------------------------------------------------------------
   // Notifications of resource loading events.
 
   class Resource {
    public:
     // The RenderView is starting a provisional load.
     virtual void DidStartProvisionalLoadForFrame(
         RenderViewHost* render_view_host,
@@ skipping 337 matching lines @@
   virtual bool IsExternalTabContainer() const;
 
   // The RenderView has inserted one css file into page.
   virtual void DidInsertCSS() {}
 
   // A different node in the page got focused.
   virtual void FocusedNodeChanged() {}
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_