Move all filters-related files from core/platform to platform.

Source/platform/graphics/filters/FEColorMatrix.h

Index: Source/platform/graphics/filters/FEColorMatrix.h
diff --git a/Source/core/platform/graphics/filters/FEColorMatrix.h b/Source/platform/graphics/filters/FEColorMatrix.h
similarity index 98%
rename from Source/core/platform/graphics/filters/FEColorMatrix.h
rename to Source/platform/graphics/filters/FEColorMatrix.h
index 7593e4e1c1b285ced7ff8f8f2538b945c8773aa2..cd7cf1b5d0606697afdf1d1604794041286d4293 100644
--- a/Source/core/platform/graphics/filters/FEColorMatrix.h
+++ b/Source/platform/graphics/filters/FEColorMatrix.h
@@ -23,9 +23,8 @@
 #ifndef FEColorMatrix_h
 #define FEColorMatrix_h
 
-#include "platform/graphics/filters/FilterEffect.h"
-
 #include "platform/graphics/filters/Filter.h"
+#include "platform/graphics/filters/FilterEffect.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
@@ -38,7 +37,7 @@ enum ColorMatrixType {
     FECOLORMATRIX_TYPE_LUMINANCETOALPHA = 4
 };
 
-class FEColorMatrix : public FilterEffect {
+class PLATFORM_EXPORT FEColorMatrix : public FilterEffect {
 public:
     static PassRefPtr<FEColorMatrix> create(Filter*, ColorMatrixType, const Vector<float>&);