Connect Sky and Ganesh in SkyShell

sky/shell/gpu_delegate.h

Index: sky/shell/gpu_delegate.h
diff --git a/sky/shell/gpu_delegate.h b/sky/shell/gpu_delegate.h
index 34ab4cdf284cba2d24a871c9188ebea5f51b1593..00040c5223208987773f8b8cf62ca273dabe6f57 100644
--- a/sky/shell/gpu_delegate.h
+++ b/sky/shell/gpu_delegate.h
@@ -5,8 +5,11 @@
 #ifndef SKY_SHELL_GPU_DELEGATE_H_
 #define SKY_SHELL_GPU_DELEGATE_H_
 
+#include "skia/ext/refptr.h"
 #include "ui/gfx/native_widget_types.h"
 
+class SkPicture;
+
 namespace sky {
 namespace shell {
 
@@ -14,6 +17,7 @@ class GPUDelegate {
  public:
   virtual void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) = 0;
   virtual void OnOutputSurfaceDestroyed() = 0;
+  virtual void Draw(skia::RefPtr<SkPicture> picture) = 0;
 
  protected:
   virtual ~GPUDelegate();