Use IDCompositionSurface to implement DirectCompositionSurfaceWin.

cc/test/fake_output_surface.cc

Index: cc/test/fake_output_surface.cc
diff --git a/cc/test/fake_output_surface.cc b/cc/test/fake_output_surface.cc
index 07cd5b77019cd014d0b77b910a07369490f8a512..6c63f4644911f606aaedc6991b822c61d861d843 100644
--- a/cc/test/fake_output_surface.cc
+++ b/cc/test/fake_output_surface.cc
@@ -58,6 +58,10 @@ void FakeOutputSurface::BindFramebuffer() {
   context_provider_->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, framebuffer_);
 }
 
+void FakeOutputSurface::SetDrawRectangle(const gfx::Rect& rect) {
+  last_set_draw_rectangle_ = rect;
+}
+
 uint32_t FakeOutputSurface::GetFramebufferCopyTextureFormat() {
   if (framebuffer_)
     return framebuffer_format_;