Making GraphicsContext the owner of PlatformContext.

Source/core/platform/graphics/filters/FEGaussianBlur.cpp

Index: Source/core/platform/graphics/filters/FEGaussianBlur.cpp
diff --git a/Source/core/platform/graphics/filters/FEGaussianBlur.cpp b/Source/core/platform/graphics/filters/FEGaussianBlur.cpp
index a84e02eab18ddab505eb937b77ee02b8385c9cb7..4d648d40dbb62359aaf1c8f6b27bfdd7fc40d0c9 100644
--- a/Source/core/platform/graphics/filters/FEGaussianBlur.cpp
+++ b/Source/core/platform/graphics/filters/FEGaussianBlur.cpp
@@ -30,6 +30,8 @@
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/cpu/arm/filters/FEGaussianBlurNEON.h"
 #include "core/platform/graphics/filters/Filter.h"
+#include "core/platform/graphics/filters/SkiaImageFilterBuilder.h"
+#include "core/platform/graphics/skia/PlatformContextSkia.h"
 #include "core/platform/text/TextStream.h"
 #include "core/rendering/RenderTreeAsText.h"
 
@@ -38,7 +40,6 @@
 #include <wtf/Uint8ClampedArray.h>
 
 #include "SkBlurImageFilter.h"
-#include "core/platform/graphics/filters/SkiaImageFilterBuilder.h"
 
 using namespace std;