Get web app icon via FavIconHelper and auto repair/update

chrome/browser/tab_contents/tab_contents.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_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 
 #include "build/build_config.h"
 
 #include <map>
@@ skipping 157 matching lines @@
   // time and can be NULL (during setup and teardown).
   RenderWidgetHostView* render_widget_host_view() const {
     return render_manager_.current_view();
   }
 
   // The TabContentsView will never change and is guaranteed non-NULL.
   TabContentsView* view() const {
     return view_.get();
   }
 
+  // Returns the FavIconHelper of this TabContents.
+  FavIconHelper& fav_icon_helper() {
+    return fav_icon_helper_;
+  }
+
 #ifdef UNIT_TEST
   // Expose the render manager for testing.
   RenderViewHostManager* render_manager() { return &render_manager_; }
 #endif
 
   // Tab navigation state ------------------------------------------------------
 
   // Returns the current navigation properties, which if a navigation is
   // pending may be provisional (e.g., the navigation could result in a
   // download, in which case the URL would revert to what it was previously).
@@ skipping 799 matching lines @@
 
   // Registers and unregisters us for notifications.
   NotificationRegistrar registrar_;
 
   // Handles print preview and print job for this contents.
   printing::PrintViewManager printing_;
 
   // SavePackage, lazily created.
   scoped_refptr<SavePackage> save_package_;
 
-  // Tracks our pending CancelableRequests. This maps pending requests to
-  // page IDs so that we know whether a given callback still applies. The
-  // page ID -1 means no page ID was set.
-  CancelableRequestConsumerT<int32, -1> cancelable_consumer_;
-
   // FormFieldHistoryManager, lazily created.
   scoped_ptr<FormFieldHistoryManager> form_field_history_manager_;
 
   // AutoFillManager, lazily created.
   scoped_ptr<AutoFillManager> autofill_manager_;
 
   // PasswordManager, lazily created.
   scoped_ptr<PasswordManager> password_manager_;
 
   // PluginInstaller, lazily created.
@@ skipping 163 matching lines @@
   // Can be NULL in which case we defer to the request context from the
   // profile
   scoped_refptr<URLRequestContextGetter> request_context_;
 
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_