Moving GraphicsContext and dependencies from core to platform.

Source/core/css/CSSFontFaceSource.cpp

Index: Source/core/css/CSSFontFaceSource.cpp
diff --git a/Source/core/css/CSSFontFaceSource.cpp b/Source/core/css/CSSFontFaceSource.cpp
index 1df230551d08e36af0427b094eba800afeae528b..d235aea7edfe1462e40cad6667ca5787a2e07d50 100644
--- a/Source/core/css/CSSFontFaceSource.cpp
+++ b/Source/core/css/CSSFontFaceSource.cpp
@@ -29,9 +29,9 @@
 #include "RuntimeEnabledFeatures.h"
 #include "core/css/CSSCustomFontData.h"
 #include "core/css/CSSFontFace.h"
-#include "core/platform/graphics/FontCache.h"
-#include "core/platform/graphics/SimpleFontData.h"
+#include "platform/fonts/FontCache.h"
 #include "platform/fonts/FontDescription.h"
+#include "platform/fonts/SimpleFontData.h"
 #include "public/platform/Platform.h"
 #include "wtf/CurrentTime.h"
 
@@ -135,7 +135,7 @@ PassRefPtr<SimpleFontData> CSSFontFaceSource::getFontData(const FontDescription&
     if (isLocal()) {
         // We're local. Just return a SimpleFontData from the normal cache.
         // We don't want to check alternate font family names here, so pass true as the checkingAlternateName parameter.
-        RefPtr<SimpleFontData> fontData = fontCache()->getFontData(fontDescription, m_string, true);
+        RefPtr<SimpleFontData> fontData = FontCache::fontCache()->getFontData(fontDescription, m_string, true);
         m_histograms.recordLocalFont(fontData);
         return fontData;
     }
@@ -218,7 +218,7 @@ PassRefPtr<SimpleFontData> CSSFontFaceSource::getFontData(const FontDescription&
     } else {
         // This temporary font is not retained and should not be returned.
         FontCachePurgePreventer fontCachePurgePreventer;
-        SimpleFontData* temporaryFont = fontCache()->getNonRetainedLastResortFallbackFont(fontDescription);
+        SimpleFontData* temporaryFont = FontCache::fontCache()->getNonRetainedLastResortFallbackFont(fontDescription);
         RefPtr<CSSCustomFontData> cssFontData = CSSCustomFontData::create(true);
         cssFontData->setCSSFontFaceSource(this);
         fontData = SimpleFontData::create(temporaryFont->platformData(), cssFontData);
@@ -259,7 +259,7 @@ bool CSSFontFaceSource::isLocalFontAvailable(const FontDescription& fontDescript
 {
     if (!isLocal())
         return false;
-    return fontCache()->isPlatformFontAvailable(fontDescription, m_string);
+    return FontCache::fontCache()->isPlatformFontAvailable(fontDescription, m_string);
 }
 
 void CSSFontFaceSource::beginLoadIfNeeded()