Remove default implementation of GrEffect::isEqual. Make GrSingleTextureEffect abstract.
Review URL: https://codereview.appspot.com/7142049

git-svn-id: http://skia.googlecode.com/svn/trunk@7254 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/texdata.cpp b/gm/texdata.cpp
index 1f88826..da52aad 100644
--- a/gm/texdata.cpp
+++ b/gm/texdata.cpp
@@ -12,7 +12,7 @@
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
-#include "effects/GrSingleTextureEffect.h"
+#include "effects/GrSimpleTextureEffect.h"
 #include "SkColorPriv.h"
 #include "SkDevice.h"
 
@@ -113,7 +113,7 @@
                 SkMatrix tm;
                 tm = vm;
                 tm.postIDiv(2*S, 2*S);
-                paint.colorStage(0)->setEffect(GrSingleTextureEffect::Create(texture, tm))->unref();
+                paint.colorStage(0)->setEffect(GrSimpleTextureEffect::Create(texture, tm))->unref();
 
                 ctx->drawRect(paint, GrRect::MakeWH(2*S, 2*S));