Revert of removing GrDrawEffect

include/gpu/GrTBackendEffectFactory.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTBackendEffectFactory_DEFINED
 #define GrTBackendEffectFactory_DEFINED
 
 #include "GrBackendEffectFactory.h"
+#include "GrDrawEffect.h"
 #include "gl/GrGLProgramEffects.h"
 
 /**
  * Implements GrBackendEffectFactory for a GrEffect subclass as a singleton. This can be used by
  * most GrEffect subclasses to implement the GrEffect::getFactory() method:
  *
  * const GrBackendEffectFactory& MyEffect::getFactory() const {
  *     return GrTBackendEffectFactory<MyEffect>::getInstance();
  * }
  *
  * Using this class requires that the GrEffect subclass always produces the same GrGLEffect
  * subclass. Additionally, It adds the following requirements to the GrEffect and GrGLEffect
  * subclasses:
  *
  * 1. The GrGLEffect used by GrEffect subclass MyEffect must be named or typedef'ed to
  *    MyEffect::GLEffect.
  * 2. MyEffect::GLEffect must have a static function:
- *      EffectKey GenKey(const GrEffect, const GrGLCaps&)
+ *      EffectKey GenKey(const GrDrawEffect, const GrGLCaps&)
  *    which generates a key that maps 1 to 1 with code variations emitted by
  *    MyEffect::GLEffect::emitCode().
  * 3. MyEffect must have a static function:
  *      const char* Name()
  *    which returns a human-readable name for the effect.
  */
 template <typename EffectClass>
 class GrTBackendEffectFactory : public GrBackendEffectFactory {
 
 public:
     typedef typename EffectClass::GLEffect GLEffect;
 
     /** Returns a human-readable name for the effect. Implemented using GLEffect::Name as described
      *  in this class's comment. */
     virtual const char* name() const SK_OVERRIDE { return EffectClass::Name(); }
 
 
     /** Implemented using GLEffect::GenKey as described in this class's comment. */
-    virtual void getGLEffectKey(const GrEffect& effect,
+    virtual void getGLEffectKey(const GrDrawEffect& drawEffect,
                                 const GrGLCaps& caps,
                                 GrEffectKeyBuilder* b) const SK_OVERRIDE {
-        GLEffect::GenKey(effect, caps, b);
+        GLEffect::GenKey(drawEffect, caps, b);
     }
 
     /** Returns a new instance of the appropriate *GL* implementation class
         for the given GrEffect; caller is responsible for deleting
         the object. */
-    virtual GrGLEffect* createGLInstance(const GrEffect& effect) const SK_OVERRIDE {
-        return SkNEW_ARGS(GLEffect, (*this, effect));
+    virtual GrGLEffect* createGLInstance(const GrDrawEffect& drawEffect) const SK_OVERRIDE {
+        return SkNEW_ARGS(GLEffect, (*this, drawEffect));
     }
 
     /** This class is a singleton. This function returns the single instance. */
     static const GrBackendEffectFactory& getInstance() {
         static SkAlignedSTStorage<1, GrTBackendEffectFactory> gInstanceMem;
         static const GrTBackendEffectFactory* gInstance;
         if (!gInstance) {
             gInstance = SkNEW_PLACEMENT(gInstanceMem.get(),
                                         GrTBackendEffectFactory);
         }
         return *gInstance;
     }
 
 protected:
     GrTBackendEffectFactory() {}
 };
 
 #endif