Remove duplicated headers from core/

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

 /*
  * 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.
  */
 
 #include "config.h"
 #include "core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h"
 
 #include "RuntimeEnabledFeatures.h"
-#include "SkPaint.h"
 #include "SkTypeface.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/NotImplemented.h"
 #include "core/platform/graphics/FontCache.h"
 #include "core/platform/graphics/harfbuzz/HarfBuzzFace.h"
 
 #include "public/platform/linux/WebFontInfo.h"
 #include "public/platform/linux/WebFontRenderStyle.h"
 #include "public/platform/linux/WebSandboxSupport.h"
 #include "public/platform/Platform.h"
-#include "wtf/text/StringImpl.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 static SkPaint::Hinting skiaHinting = SkPaint::kNormal_Hinting;
 static bool useSkiaAutoHint = true;
 static bool useSkiaBitmaps = true;
 static bool useSkiaAntiAlias = true;
 static bool useSkiaSubpixelRendering = false;
 
@@ skipping 233 matching lines @@
     if (m_style.useSubpixelRendering == FontRenderStyle::NoPreference)
         m_style.useSubpixelRendering = useSkiaSubpixelRendering;
 
     // TestRunner specifically toggles the subpixel positioning flag.
     if (m_style.useSubpixelPositioning == FontRenderStyle::NoPreference
         || isRunningLayoutTest())
         m_style.useSubpixelPositioning = useSkiaSubpixelPositioning;
 }
 
 } // namespace WebCore