Cleanup: remove GTK stuff

chrome/browser/ui/views/frame/browser_non_client_frame_view.cc

 // Copyright (c) 2011 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/views/frame/browser_non_client_frame_view.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 53 matching lines @@
       const gfx::Image& avatar = cache.GetAvatarIconOfProfileAtIndex(index);
       if (avatar_button_.get()) {
         avatar_button_->SetAvatarIcon(avatar, is_gaia_picture);
         avatar_button_->SetText(cache.GetNameOfProfileAtIndex(index));
       }
       DrawTaskBarDecoration(frame_->GetNativeWindow(), &avatar);
     }
   }
 }
 
-#if defined(OS_WIN)
-// See the comments in the .h file as for why this code is windows-only.
 void BrowserNonClientFrameView::VisibilityChanged(views::View* starting_from,
                                                   bool is_visible) {
   if (!is_visible)
     return;
   // The first time UpdateAvatarInfo() is called the window is not visible so
   // DrawTaskBarDecoration() has no effect. Therefore we need to call it again
   // once the window is visible.
   UpdateAvatarInfo();
 }
-#endif