Support painting panels with chromium themes on GTK.

chrome/browser/ui/panels/panel_window_controller_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_window_controller_cocoa.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
@@ skipping 868 matching lines @@
   Panel* panel = windowShim_->panel();
   panel->OnTitlebarClicked((modifierFlags & NSShiftKeyMask) ?
                            panel::APPLY_TO_ALL : panel::NO_MODIFIER);
 }
 
 - (int)titlebarHeightInScreenCoordinates {
   NSView* titlebar = [self titlebarView];
   return NSHeight([titlebar convertRect:[titlebar bounds] toView:nil]);
 }
 
-- (int)titlebarIconOnlyWidthInScreenCoordinates {
-  return [[self titlebarView] iconOnlyWidthInScreenCoordinates];
-}
-
 - (void)ensureFullyVisible {
   // Shows the window without making it key, on top of its layer, even if
   // Chromium is not an active app.
   [[self window] orderFrontRegardless];
 }
 
 // TODO(dcheng): These two selectors are almost copy-and-paste from
 // BrowserWindowController. Figure out the appropriate way of code sharing,
 // whether it's refactoring more things into BrowserWindowUtils or making a
 // common base controller for browser windows.
@@ skipping 108 matching lines @@
   [[self window] setLevel:NSDockWindowLevel];
 }
 
 - (void)enableResizeByMouse:(BOOL)enable {
   if (![self isWindowLoaded])
     return;
   [[self window] invalidateCursorRectsForView:overlayView_];
 }
 
 @end