Auto-compare GrProcessors' texture accesses in isEqual().

src/gpu/effects/GrSimpleTextureEffect.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSimpleTextureEffect_DEFINED
 #define GrSimpleTextureEffect_DEFINED
 
@@ skipping 50 matching lines @@
         : GrSingleTextureEffect(texture, matrix, filterMode, coordSet) {
     }
 
     GrSimpleTextureEffect(GrTexture* texture,
                           const SkMatrix& matrix,
                           const GrTextureParams& params,
                           GrCoordSet coordSet)
         : GrSingleTextureEffect(texture, matrix, params, coordSet) {
     }
 
-    virtual bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE {
-        const GrSimpleTextureEffect& ste = other.cast<GrSimpleTextureEffect>();
-        return this->hasSameTextureParamsMatrixAndSourceCoords(ste);
-    }
+    virtual bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE { return true; }
 
     virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
 };
 
 #endif