cc: Move draw params from SetExternalDrawConstraints to OnDraw

cc/test/fake_output_surface.h

Index: cc/test/fake_output_surface.h
diff --git a/cc/test/fake_output_surface.h b/cc/test/fake_output_surface.h
index 7819848a8148c47e575608dbf3542a0f33277bee..275bbc7f92185489331d431a6f41f2050ff3166d 100644
--- a/cc/test/fake_output_surface.h
+++ b/cc/test/fake_output_surface.h
@@ -54,6 +54,12 @@ class FakeOutputSurface : public OutputSurface {
                                                  false));
   }
 
+  static scoped_ptr<FakeOutputSurface> Create3DSoftware() {

[danakj, 2015/11/24 21:17:30]

"3d"

Create3dWithResourcelessSoftwareSupport? or something a bit more explainy?

I don't want people using this by default

[boliu, 2015/11/24 23:27:38]

That works :)

+    return make_scoped_ptr(new FakeOutputSurface(
+        TestContextProvider::Create(),
+        make_scoped_ptr(new SoftwareOutputDevice), false));
+  }
+
   static scoped_ptr<FakeOutputSurface> CreateDelegating3d() {
     return make_scoped_ptr(
         new FakeOutputSurface(TestContextProvider::Create(),