Make DrawQuad constructors public, rm DQ::Create() function

mojo/examples/surfaces_app/child_impl.cc

Index: mojo/examples/surfaces_app/child_impl.cc
diff --git a/mojo/examples/surfaces_app/child_impl.cc b/mojo/examples/surfaces_app/child_impl.cc
index 52118f028f5b8f3b4578e654f55c9e040255b57d..2d5140a7248d7581e2d41cdbeb8750ffceb72d97 100644
--- a/mojo/examples/surfaces_app/child_impl.cc
+++ b/mojo/examples/surfaces_app/child_impl.cc
@@ -85,14 +85,14 @@ void ChildImpl::Draw() {
 
   CreateAndAppendSimpleSharedQuadState(pass.get(), gfx::Transform(), size_);
 
-  scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
+  SolidColorDrawQuad* color_quad =
+      pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
   bool force_anti_aliasing_off = false;
   color_quad->SetNew(pass->shared_quad_state_list.back(),
                      rect,
                      rect,
                      color_,
                      force_anti_aliasing_off);
-  pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
 
   scoped_ptr<DelegatedFrameData> delegated_frame_data(new DelegatedFrameData);
   delegated_frame_data->render_pass_list.push_back(pass.Pass());