Removing the app launcher button on ChromeOS

chrome/browser/browser.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_BROWSER_H_
 #define CHROME_BROWSER_BROWSER_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 401 matching lines @@
   // already visible in this browser, it becomes selected. Otherwise a new tab
   // is created.
   void ShowSingletonTab(const GURL& url);
 
   // Update commands whose state depends on whether the window is in fullscreen
   // mode. This is a public function because on Linux, fullscreen mode is an
   // async call to X. Once we get the fullscreen callback, the browser window
   // will call this method.
   void UpdateCommandsForFullscreenMode(bool is_fullscreen);
 
+  // Opens the apps panel as a result of a new tab creation, if the browser is
+  // configured in that mode.  Returns true if the apps panel was opened, false
+  // otherwise.
+  bool OpenAppsPanelAsNewTab();
+
   // Assorted browser commands ////////////////////////////////////////////////
 
   // NOTE: Within each of the following sections, the IDs are ordered roughly by
   // how they appear in the GUI/menus (left to right, top to bottom, etc.).
 
   // Navigation commands
   void GoBack(WindowOpenDisposition disposition);
   void GoForward(WindowOpenDisposition disposition);
   void Reload();
   void ReloadIgnoringCache();  // AKA shift-reload.
@@ skipping 594 matching lines @@
   // The extension app associated with this window, if any.
   Extension* extension_app_;
 
   // Tracks the display mode of the tabstrip.
   mutable BooleanPrefMember use_vertical_tabs_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_H_