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

src/effects/gradients/SkGradientShader.cpp

Index: src/effects/gradients/SkGradientShader.cpp
diff --git a/src/effects/gradients/SkGradientShader.cpp b/src/effects/gradients/SkGradientShader.cpp
index f131d72f237abfb3409bbc01c5fa78d6f1ce2d13..9dce5c2e0f8b5b84aa14b090329075950cc1dc5a 100644
--- a/src/effects/gradients/SkGradientShader.cpp
+++ b/src/effects/gradients/SkGradientShader.cpp
@@ -1202,10 +1202,8 @@ bool GrGradientEffect::onIsEqual(const GrFragmentProcessor& processor) const {
             }
         }
 
-        return fTextureAccess.getTexture() == s.fTextureAccess.getTexture()  &&
-            fTextureAccess.getParams().getTileModeX() ==
-                s.fTextureAccess.getParams().getTileModeX() &&
-            this->useAtlas() == s.useAtlas();
+        SkASSERT(this->useAtlas() == s.useAtlas());
+        return true;
     }
 
     return false;