Revert of removing GrDrawEffect

src/effects/gradients/SkRadialGradient.cpp

Index: src/effects/gradients/SkRadialGradient.cpp
diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index 90d945839de55eea7a3c087ce3d855b4a8896803..895dbb99ca5e96f4f5def7e0622289fd9c4c0d2c 100644
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -477,19 +477,19 @@
 public:
 
     GrGLRadialGradient(const GrBackendEffectFactory& factory,
-                       const GrEffect&) : INHERITED (factory) { }
+                       const GrDrawEffect&) : INHERITED (factory) { }
     virtual ~GrGLRadialGradient() { }
 
     virtual void emitCode(GrGLProgramBuilder*,
-                          const GrEffect&,
+                          const GrDrawEffect&,
                           const GrEffectKey&,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
-    static void GenKey(const GrEffect& effect, const GrGLCaps&, GrEffectKeyBuilder* b) {
-        b->add32(GenBaseGradientKey(effect));
+    static void GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&, GrEffectKeyBuilder* b) {
+        b->add32(GenBaseGradientKey(drawEffect));
     }
 
 private:
@@ -560,7 +560,7 @@
 /////////////////////////////////////////////////////////////////////
 
 void GrGLRadialGradient::emitCode(GrGLProgramBuilder* builder,
-                                  const GrEffect&,
+                                  const GrDrawEffect&,
                                   const GrEffectKey& key,
                                   const char* outputColor,
                                   const char* inputColor,