Miscellaneous cleanup to reduce number of includes in platform/graphics/

Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h

 /*
  * Copyright (c) 2006, 2007, 2008, 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
@@ skipping 14 matching lines @@
  * 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 FontPlatformDataHarfBuzz_h
 #define FontPlatformDataHarfBuzz_h
 
 #include "SkPaint.h"
-#include "core/platform/SharedBuffer.h"
 #include "core/platform/graphics/FontOrientation.h"
 #include "core/platform/graphics/chromium/FontRenderStyle.h"
 #include "core/platform/graphics/opentype/OpenTypeVerticalData.h"
 #include <wtf/Forward.h>
 #include <wtf/RefPtr.h>
 #include <wtf/text/CString.h>
 #include <wtf/text/StringImpl.h>
 
 class SkTypeface;
 typedef uint32_t SkFontID;
 
 namespace WebCore {
 
 class FontDescription;
 class HarfBuzzFace;
+class SharedBuffer;
 
 // -----------------------------------------------------------------------------
 // FontPlatformData is the handle which WebKit has on a specific face. A face
 // is the tuple of (font, size, ...etc). Here we are just wrapping a Skia
 // SkTypeface pointer and dealing with the reference counting etc.
 // -----------------------------------------------------------------------------
 class FontPlatformData {
 public:
     // Used for deleted values in the font cache's hash tables. The hash table
     // will create us with this structure, and it will compare other values
@@ skipping 76 matching lines @@
     FontOrientation m_orientation;
     FontRenderStyle m_style;
     mutable RefPtr<HarfBuzzFace> m_harfBuzzFace;
 
     SkTypeface* hashTableDeletedFontValue() const { return reinterpret_cast<SkTypeface*>(-1); }
 };
 
 } // namespace WebCore
 
 #endif // ifdef FontPlatformDataHarfBuzz_h