Fix for copy surface not handling dirty context

src/gpu/gl/GrGLGpu.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLGpu.h"
 #include "GrGLGLSL.h"
@@ skipping 2748 matching lines @@
         return false;
     }
 
     // We'll do a CopyTexSubImage. Make the dst a plain old texture.
     desc->fConfig = src->config();
     desc->fOrigin = src->origin();
     desc->fFlags = kNone_GrSurfaceFlags;
     return true;
 }
 
-bool GrGLGpu::copySurface(GrSurface* dst,
-                          GrSurface* src,
-                          const SkIRect& srcRect,
-                          const SkIPoint& dstPoint) {
+bool GrGLGpu::onCopySurface(GrSurface* dst,
+                            GrSurface* src,
+                            const SkIRect& srcRect,
+                            const SkIPoint& dstPoint) {
     if (src->asTexture() && dst->asRenderTarget()) {
         this->copySurfaceAsDraw(dst, src, srcRect, dstPoint);
         return true;
     }
     
     if (can_copy_texsubimage(dst, src, this)) {
         this->copySurfaceAsCopyTexSubImage(dst, src, srcRect, dstPoint);
         return true;
     }
 
@@ skipping 413 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }