Introduce ui.dll / libui.so for the component build.

ui/base/theme_provider.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_BASE_THEME_PROVIDER_H_
 #define UI_BASE_THEME_PROVIDER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/ui_api.h"
 
 #if defined(OS_MACOSX)
 #ifdef __OBJC__
 @class NSColor;
 @class NSGradient;
 @class NSImage;
 #else
 class NSColor;
 class NSGradient;
 class NSImage;
@@ skipping 11 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // ThemeProvider
 //
 //   ThemeProvider is an abstract class that defines the API that should be
 //   implemented to provide bitmaps and color information for a given theme.
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-class ThemeProvider {
+class UI_API ThemeProvider {
  public:
   virtual ~ThemeProvider();
 
   // TODO(beng): This dependency is horrible!
   // Initialize the provider with the passed in profile.
   virtual void Init(Profile* profile) = 0;
 
   // Get the bitmap specified by |id|. An implementation of ThemeProvider should
   // have its own source of ids (e.g. an enum, or external resource bundle).
   virtual SkBitmap* GetBitmapNamed(int id) const = 0;
@@ skipping 58 matching lines @@
   virtual GdkPixbuf* GetPixbufNamed(int id) const = 0;
 
   // As above, but flips it in RTL locales.
   virtual GdkPixbuf* GetRTLEnabledPixbufNamed(int id) const = 0;
 #endif
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_THEME_PROVIDER_H_