Decouple PassThroughImageTransportSurface from GpuCommandBufferStub

gpu/ipc/service/image_transport_surface_win.cc

Index: gpu/ipc/service/image_transport_surface_win.cc
diff --git a/gpu/ipc/service/image_transport_surface_win.cc b/gpu/ipc/service/image_transport_surface_win.cc
index 80c34c31793f3355007cf4bdf7bd64c624e88184..fb27db6985fe654cd7dbabdb571ea3a96072b45f 100644
--- a/gpu/ipc/service/image_transport_surface_win.cc
+++ b/gpu/ipc/service/image_transport_surface_win.cc
@@ -20,7 +20,7 @@ namespace gpu {
 // static
 scoped_refptr<gl::GLSurface> ImageTransportSurface::CreateNativeSurface(
     GpuChannelManager* manager,
-    GpuCommandBufferStub* stub,
+    base::WeakPtr<ImageTransportSurfaceDelegate> delegate,
     SurfaceHandle surface_handle,
     gl::GLSurface::Format format) {
   DCHECK_NE(surface_handle, kNullSurfaceHandle);
@@ -49,7 +49,7 @@ scoped_refptr<gl::GLSurface> ImageTransportSurface::CreateNativeSurface(
   }
 
   return scoped_refptr<gl::GLSurface>(
-      new PassThroughImageTransportSurface(stub, surface.get()));
+      new PassThroughImageTransportSurface(delegate, surface.get()));
 }
 
 }  // namespace gpu