Revert of removing GrDrawEffect

src/effects/gradients/SkGradientShaderPriv.h

Index: src/effects/gradients/SkGradientShaderPriv.h
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index cc5b2e9a24157e289e655f4ac0d1fdaf82aface5..3ae59f5e975c04e5aba09f8a2b10753049f86916 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -403,7 +403,7 @@
     GrGLGradientEffect(const GrBackendEffectFactory& factory);
     virtual ~GrGLGradientEffect();
 
-    virtual void setData(const GrGLProgramDataManager&, const GrEffect&) SK_OVERRIDE;
+    virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 protected:
     /**
@@ -411,7 +411,7 @@
      * by the base class. The subclasses must stick it in their key and then pass it to the below
      * emit* functions from their emitCode function.
      */
-    static uint32_t GenBaseGradientKey(const GrEffect&);
+    static uint32_t GenBaseGradientKey(const GrDrawEffect&);
 
     // Emits the uniform used as the y-coord to texture samples in derived classes. Subclasses
     // should call this method from their emitCode().