Remove grow box rect support, browser part.

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"
 #import "base/mac/sdk_forward_declarations.h"
@@ skipping 497 matching lines @@
 
 bool BrowserWindowCocoa::IsTabStripEditable() const {
   return ![controller_ isDragSessionActive];
 }
 
 bool BrowserWindowCocoa::IsToolbarVisible() const {
   return browser_->SupportsWindowFeature(Browser::FEATURE_TOOLBAR) ||
          browser_->SupportsWindowFeature(Browser::FEATURE_LOCATIONBAR);
 }
 
-gfx::Rect BrowserWindowCocoa::GetRootWindowResizerRect() const {
-  if (IsDownloadShelfVisible())
-    return gfx::Rect();
-  NSRect tabRect = [controller_ selectedTabGrowBoxRect];
-  return gfx::Rect(NSRectToCGRect(tabRect));
-}
-
 void BrowserWindowCocoa::AddFindBar(
     FindBarCocoaController* find_bar_cocoa_controller) {
   [controller_ addFindBar:find_bar_cocoa_controller];
 }
 
 void BrowserWindowCocoa::UpdateAlertState(TabAlertState alert_state) {
   alert_state_ = alert_state;
   UpdateTitleBar();
 }
 
@@ skipping 302 matching lines @@
 ExclusiveAccessContext* BrowserWindowCocoa::GetExclusiveAccessContext() {
   return [controller_ exclusiveAccessController];
 }
 
 void BrowserWindowCocoa::ShowImeWarningBubble(
     const extensions::Extension* extension,
     const base::Callback<void(ImeWarningBubblePermissionStatus status)>&
         callback) {
   NOTREACHED() << "The IME warning bubble is unsupported on this platform.";
 }