Moving GraphicsContext and dependencies from core to platform.

Source/platform/graphics/GraphicsContextStateSaver.h

 // Copyright (C) 2013 Google Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //    * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //    * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
@@ skipping 11 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef GraphicsContextStateSaver_h
 #define GraphicsContextStateSaver_h
 
-#include "core/platform/graphics/GraphicsContext.h"
+#include "platform/PlatformExport.h"
+#include "platform/graphics/GraphicsContext.h"
 
 namespace WebCore {
 
-class GraphicsContextStateSaver {
+class PLATFORM_EXPORT GraphicsContextStateSaver {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     GraphicsContextStateSaver(GraphicsContext& context, bool saveAndRestore = true)
         : m_context(context)
         , m_saveAndRestore(saveAndRestore)
     {
         if (m_saveAndRestore)
             m_context.save();
     }
 
@@ skipping 21 matching lines @@
     bool saved() const { return m_saveAndRestore; }
 
 private:
     GraphicsContext& m_context;
     bool m_saveAndRestore;
 };
 
 } // namespace WebCore
 
 #endif // GraphicsContextStateSaver_h