Support for non-DOM canvases/contexts (backed by bitaps).

runtime/embedders/openglui/common/graphics_handler.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_
 #define EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_
 
 #include "embedders/openglui/common/isized.h"
 #include "embedders/openglui/common/opengl.h"
 #include "embedders/openglui/common/support.h"
@@ skipping 18 matching lines @@
     virtual void Stop();
 
     void SwapBuffers() {
       GLSwapBuffers();
     }
 
     virtual int32_t Update();
 
     void SetViewport(int left, int top, int width, int height);
 
-    SkCanvas* CreateCanvas();
-
-    void Flush() {
-      // TODO(gram): see if we really need this.
-      grcontext->flush();
-    }
+    SkCanvas* CreateDisplayCanvas();
+    SkCanvas* CreateBitmapCanvas(int width, int height);
 
     virtual ~GraphicsHandler() {
     }
 
   protected:
     SkAutoGraphics ag;
     GrContext* grcontext;
     int32_t width_, height_;
 };
 
 extern GraphicsHandler* graphics;
 
 #endif  // EMBEDDERS_OPENGLUI_COMMON_GRAPHICS_HANDLER_H_