Fix for copy surface not handling dirty context

src/gpu/GrGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpu_DEFINED
 #define GrGpu_DEFINED
 
@@ skipping 276 matching lines @@
 
     virtual void buildProgramDesc(GrProgramDesc*,
                                   const GrPrimitiveProcessor&,
                                   const GrPipeline&,
                                   const GrBatchTracker&) const = 0;
 
     // Called to perform a surface to surface copy. Fallbacks to issuing a draw from the src to dst
     // take place at the GrDrawTarget level and this function implement faster copy paths. The rect
     // and point are pre-clipped. The src rect and implied dst rect are guaranteed to be within the
     // src/dst bounds and non-empty.
-    virtual bool copySurface(GrSurface* dst,
-                             GrSurface* src,
-                             const SkIRect& srcRect,
-                             const SkIPoint& dstPoint) = 0;
+    bool copySurface(GrSurface* dst,
+                     GrSurface* src,
+                     const SkIRect& srcRect,
+                     const SkIPoint& dstPoint);
 
     struct DrawArgs {
         DrawArgs(const GrPrimitiveProcessor* primProc,
                  const GrPipeline* pipeline,
                  const GrProgramDesc* desc,
                  const GrBatchTracker* batchTracker)
             : fPrimitiveProcessor(primProc)
             , fPipeline(pipeline)
             , fDesc(desc)
             , fBatchTracker(batchTracker) {
@@ skipping 164 matching lines @@
 
     // overridden by backend-specific derived class to perform the surface write
     virtual bool onWritePixels(GrSurface*,
                                int left, int top, int width, int height,
                                GrPixelConfig config, const void* buffer,
                                size_t rowBytes) = 0;
 
     // overridden by backend-specific derived class to perform the resolve
     virtual void onResolveRenderTarget(GrRenderTarget* target) = 0;
 
+    // overridden by backend specific derived class to perform the copy surface
+    virtual bool onCopySurface(GrSurface* dst,
+                               GrSurface* src,
+                               const SkIRect& srcRect,
+                               const SkIPoint& dstPoint) = 0;
+
     // width and height may be larger than rt (if underlying API allows it).
     // Should attach the SB to the RT. Returns false if compatible sb could
     // not be created.
     virtual bool createStencilAttachmentForRenderTarget(GrRenderTarget*, int width, int height) = 0;
 
     // attaches an existing SB to an existing RT.
     virtual bool attachStencilAttachmentToRenderTarget(GrStencilAttachment*, GrRenderTarget*) = 0;
 
     // clears target's entire stencil buffer to 0
     virtual void clearStencil(GrRenderTarget* target) = 0;
@@ skipping 20 matching lines @@
     GrTraceMarkerSet                                                    fActiveTraceMarkers;
     GrTraceMarkerSet                                                    fStoredTraceMarkers;
     // The context owns us, not vice-versa, so this ptr is not ref'ed by Gpu.
     GrContext*                                                          fContext;
 
     friend class GrPathRendering;
     typedef SkRefCnt INHERITED;
 };
 
 #endif