Drawstate on stack

src/gpu/gl/GrGpuGL.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 GrGpuGL_DEFINED
 #define GrGpuGL_DEFINED
 
@@ skipping 82 matching lines @@
     void notifyIndexBufferDelete(GrGLuint id) {
         fHWGeometryState.notifyIndexBufferDelete(id);
     }
 
     // DrawTarget overrides
     virtual bool copySurface(GrSurface* dst,
                              GrSurface* src,
                              const SkIRect& srcRect,
                              const SkIPoint& dstPoint) SK_OVERRIDE;
 
-    virtual bool canCopySurface(GrSurface* dst,
-                                GrSurface* src,
+    virtual bool canCopySurface(const GrSurface* dst,
+                                const GrSurface* src,
                                 const SkIRect& srcRect,
                                 const SkIPoint& dstPoint) SK_OVERRIDE;
 
 protected:
     virtual void buildProgramDesc(const GrOptDrawState&,
                                   const GrProgramDesc::DescInfo&,
                                   GrGpu::DrawType,
                                   const GrDeviceCoordTexture* dstCopy,
                                   GrProgramDesc*) SK_OVERRIDE;
 
@@ skipping 338 matching lines @@
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif