Implement a generic matrix transform image filter.

src/ports/SkGlobalInitialization_default.cpp

Index: src/ports/SkGlobalInitialization_default.cpp
diff --git a/src/ports/SkGlobalInitialization_default.cpp b/src/ports/SkGlobalInitialization_default.cpp
index dd24eaf5e5cb7bcac2cdde42de54ea5de387fbd3..ff13df107c53a0a7dd189a0299120a70fb0b3bbd 100644
--- a/src/ports/SkGlobalInitialization_default.cpp
+++ b/src/ports/SkGlobalInitialization_default.cpp
@@ -58,6 +58,7 @@
 #include "SkTableColorFilter.h"
 #include "SkTestImageFilters.h"
 #include "SkTileImageFilter.h"
+#include "SkTransformImageFilter.h"
 #include "SkXfermodeImageFilter.h"
 
 static void InitializeFlattenables(int*) {
@@ -96,6 +97,7 @@ static void InitializeFlattenables(int*) {
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkStippleMaskFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSumPathEffect)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTileImageFilter)
+    SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTransformImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkXfermodeImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkMagnifierImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkMatrixConvolutionImageFilter)