Moving GraphicsContext and dependencies from core to platform.

Source/platform/graphics/filters/SkiaImageFilterBuilder.h

Index: Source/platform/graphics/filters/SkiaImageFilterBuilder.h
diff --git a/Source/core/platform/graphics/filters/SkiaImageFilterBuilder.h b/Source/platform/graphics/filters/SkiaImageFilterBuilder.h
similarity index 96%
rename from Source/core/platform/graphics/filters/SkiaImageFilterBuilder.h
rename to Source/platform/graphics/filters/SkiaImageFilterBuilder.h
index d21afddf3782aad578c43ef0c74541567098281e..33adf2026e657818e1381e7fed2bce675aea51bb 100644
--- a/Source/core/platform/graphics/filters/SkiaImageFilterBuilder.h
+++ b/Source/platform/graphics/filters/SkiaImageFilterBuilder.h
@@ -26,6 +26,7 @@
 #ifndef SkiaImageFilterBuilder_h
 #define SkiaImageFilterBuilder_h
 
+#include "platform/PlatformExport.h"
 #include "platform/geometry/FloatSize.h"
 #include "platform/graphics/ColorSpace.h"
 #include "public/platform/WebFilterOperations.h"
@@ -37,7 +38,7 @@ namespace WebCore {
 class FilterEffect;
 class FilterOperations;
 
-class SkiaImageFilterBuilder {
+class PLATFORM_EXPORT SkiaImageFilterBuilder {
 public:
     SkiaImageFilterBuilder();
     ~SkiaImageFilterBuilder();