Revert of removing GrDrawEffect

src/effects/SkColorMatrixFilter.cpp

Index: src/effects/SkColorMatrixFilter.cpp
diff --git a/src/effects/SkColorMatrixFilter.cpp b/src/effects/SkColorMatrixFilter.cpp
index bf098c840f8194ad9fadb8c4215f7e46e280b642..566704849be0cf21ef4c210765c3a8e191e278e5 100644
--- a/src/effects/SkColorMatrixFilter.cpp
+++ b/src/effects/SkColorMatrixFilter.cpp
@@ -399,15 +399,15 @@
     class GLEffect : public GrGLEffect {
     public:
         // this class always generates the same code.
-        static void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuilder* b) {}
+        static void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuilder* b) {}
 
         GLEffect(const GrBackendEffectFactory& factory,
-                 const GrEffect&)
+                 const GrDrawEffect&)
         : INHERITED(factory) {
         }
 
         virtual void emitCode(GrGLProgramBuilder* builder,
-                              const GrEffect&,
+                              const GrDrawEffect&,
                               const GrEffectKey&,
                               const char* outputColor,
                               const char* inputColor,
@@ -438,8 +438,8 @@
         }
 
         virtual void setData(const GrGLProgramDataManager& uniManager,
-                             const GrEffect& effect) SK_OVERRIDE {
-            const ColorMatrixEffect& cme = effect.cast<ColorMatrixEffect>();
+                             const GrDrawEffect& drawEffect) SK_OVERRIDE {
+            const ColorMatrixEffect& cme = drawEffect.castEffect<ColorMatrixEffect>();
             const float* m = cme.fMatrix.fMat;
             // The GL matrix is transposed from SkColorMatrix.
             GrGLfloat mt[]  = {
@@ -467,7 +467,7 @@
     ColorMatrixEffect(const SkColorMatrix& matrix) : fMatrix(matrix) {}
 
     virtual bool onIsEqual(const GrEffect& s) const {
-        const ColorMatrixEffect& cme = s.cast<ColorMatrixEffect>();
+        const ColorMatrixEffect& cme = CastEffect<ColorMatrixEffect>(s);
         return cme.fMatrix == fMatrix;
     }