views: Remove the implementation of about chrome dialog.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 396 matching lines @@
 // know what to do.
 void BrowserWindowCocoa::ToggleBookmarkBar() {
   bookmark_utils::ToggleWhenVisible(browser_->profile());
 }
 
 void BrowserWindowCocoa::AddFindBar(
     FindBarCocoaController* find_bar_cocoa_controller) {
   [controller_ addFindBar:find_bar_cocoa_controller];
 }
 
-void BrowserWindowCocoa::ShowAboutChromeDialog() {
-  // Go through AppController's implementation to bring up the branded panel.
-  [[NSApp delegate] orderFrontStandardAboutPanel:nil];
-}
-
 void BrowserWindowCocoa::ShowUpdateChromeDialog() {
   restart_browser::RequestRestart(window());
 }
 
 void BrowserWindowCocoa::ShowTaskManager() {
   TaskManagerMac::Show(false);
 }
 
 void BrowserWindowCocoa::ShowBackgroundPages() {
   TaskManagerMac::Show(true);
@@ skipping 214 matching lines @@
   AvatarMenuBubbleController* menu =
       [[AvatarMenuBubbleController alloc] initWithBrowser:browser_
                                                anchoredAt:point];
   [[menu bubble] setAlignment:info_bubble::kAlignEdgeToAnchorEdge];
   [menu showWindow:nil];
 }
 
 void BrowserWindowCocoa::ShowAvatarBubbleFromAvatarButton() {
   [[controller_ avatarButtonController] showAvatarBubble];
 }