Remove GrSurface::isSameAs

src/gpu/GrSurface.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrSurface.h"
 #include "GrSurfacePriv.h"
 
@@ skipping 105 matching lines @@
     const GrTexture* thisTex = this->asTexture();
     if (thisTex && thisTex->internalHasPendingIO()) {
         return true;
     }
     const GrRenderTarget* thisRT = this->asRenderTarget();
     if (thisRT && thisRT->internalHasPendingIO()) {
         return true;
     }
     return false;
 }
-
-bool GrSurface::isSameAs(const GrSurface* other) const {
-    const GrRenderTarget* thisRT = this->asRenderTarget();
-    if (thisRT) {
-        return thisRT == other->asRenderTarget();
-    } else {
-        const GrTexture* thisTex = this->asTexture();
-        SkASSERT(thisTex); // We must be one or the other
-        return thisTex == other->asTexture();
-    }
-}