Changes to upload tracked_objects data from all renderer

chrome/browser/ui/webui/tracking_ui.h

 // Copyright (c) 2011 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_UI_WEBUI_TRACKING_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_TRACKING_UI_H_
 #pragma once
 
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/values.h"
 #include "chrome/browser/ui/webui/chrome_web_ui.h"
 
 // The C++ back-end for the chrome://tracking2 webui page.
 class TrackingUI : public ChromeWebUI {
  public:
   explicit TrackingUI(TabContents* contents);
+  virtual ~TrackingUI();
+
+  // Get the tracking data from TrackingSynchronizer.
+  void GetData();
+
+  // Send the data to the renderer.
+  void ReceivedData(base::Value* value);
 
  private:
+  // Used to get |weak_ptr_| to self on the UI thread.
+  scoped_ptr<base::WeakPtrFactory<TrackingUI> > ui_weak_ptr_factory_;
+  base::WeakPtr<TrackingUI> ui_weak_ptr_;
+
   DISALLOW_COPY_AND_ASSIGN(TrackingUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_TRACKING_UI_H_