Implement App Tabs for GTK

chrome/browser/tab_contents/tab_contents.h

 // Copyright (c) 2010 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 <deque>
@@ skipping 192 matching lines @@
 
   // Convenience for setting the app extension by id. This does nothing if
   // |extension_app_id| is empty, or an extension can't be found given the
   // specified id.
   void SetExtensionAppById(const std::string& extension_app_id);
 
   Extension* extension_app() const { return extension_app_; }
   bool is_app() const { return extension_app_ != NULL; }
 
   // If an app extension has been explicitly set for this TabContents its icon
-  // is returned. If an app extension has not been set but there is an
-  // extension whose extent contains the url of the current page it's icon
-  // is returned. Otherwise an empty icon is returned.
+  // is returned.
   //
   // NOTE: the returned icon is larger than 16x16 (it's size is
   // Extension::EXTENSION_ICON_SMALLISH).
   SkBitmap* GetExtensionAppIcon();
 
   // 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 1055 matching lines @@
 
   // See description above setter.
   bool closed_by_user_gesture_;
 
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_