Adds a gfx_export.h to ui/gfx and converts all code in ui/gfx to

ui/gfx/android/device_display_info.h

 // 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.
 
 #ifndef UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_
 #define UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_
 
 #include <jni.h>
 #include <string>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/basictypes.h"
-#include "ui/base/ui_export.h"
+#include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 
 // Facilitates access to device information typically only
 // available using the Android SDK, including Display properties.
 class UI_EXPORT DeviceDisplayInfo {
  public:
   DeviceDisplayInfo();
   ~DeviceDisplayInfo();
 
@@ skipping 18 matching lines @@
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> j_device_info_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceDisplayInfo);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_ANDROID_DEVICE_DISPLAY_INFO_H_