Cleanup: Remove forward declarations in ui, part 2.

ui/gfx/linux_util.h

 // 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.
 
 #ifndef UI_GFX_LINUX_UTIL_H_
 #define UI_GFX_LINUX_UTIL_H_
 #pragma once
 
 #include <glib-object.h>
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/base/ui_export.h"
 
 typedef struct _PangoContext PangoContext;
 
-class SkBitmap;
-
 namespace gfx {
 
-class Rect;
-
 // Creates and returns a PangoContext. The caller owns the context.
 PangoContext* GetPangoContext();
 
 // Returns the resolution (DPI) used by pango. A negative values means the
 // resolution hasn't been set.
 double GetPangoResolution();
 
 // Change windows accelerator style to GTK style. (GTK uses _ for
 // accelerators.  Windows uses & with && as an escape for &.)
 UI_EXPORT std::string ConvertAcceleratorsFromWindowsStyle(
@@ skipping 21 matching lines @@
     void operator()(U* ptr) const {
       if (ptr)
         g_object_unref(ptr);
     }
   };
 
   typedef scoped_ptr_malloc<T, GObjectUnrefer<T> > Type;
 };
 
 #endif  // UI_GFX_LINUX_UTIL_H_