Support painting panels with chromium themes on GTK.

chrome/browser/ui/panels/panel_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/panels/panel_browser_window_cocoa.h"
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 262 matching lines @@
 }
 
 Browser* PanelBrowserWindowCocoa::GetPanelBrowser() const {
   return browser();
 }
 
 void PanelBrowserWindowCocoa::DestroyPanelBrowser() {
   [controller_ close];
 }
 
-gfx::Size PanelBrowserWindowCocoa::IconOnlySize() const {
-  return gfx::Size([controller_ titlebarIconOnlyWidthInScreenCoordinates],
-                   [controller_ titlebarHeightInScreenCoordinates]);
-}
-
 void PanelBrowserWindowCocoa::EnsurePanelFullyVisible() {
   [controller_ ensureFullyVisible];
 }
 
 void PanelBrowserWindowCocoa::SetPanelAppIconVisibility(bool visible) {
   // TODO(dimich): to be implemented.
 }
 
 void PanelBrowserWindowCocoa::SetPanelAlwaysOnTop(bool on_top) {
   [controller_ updateWindowLevel];
@@ skipping 146 matching lines @@
       return ![[titlebar() closeButton] isHidden];
     case MINIMIZE_BUTTON:
       return ![[titlebar() minimizeButton] isHidden];
     case RESTORE_BUTTON:
       return ![[titlebar() restoreButton] isHidden];
     default:
       NOTREACHED();
   }
   return false;
 }