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

cc/quads/render_pass.h

Index: cc/quads/render_pass.h
diff --git a/cc/quads/render_pass.h b/cc/quads/render_pass.h
index 6b68f8d910b4c4065ef3d53bd1e45ce0be6cf843..3032f050d4c2396e3898e48f3fcae410e217c36e 100644
--- a/cc/quads/render_pass.h
+++ b/cc/quads/render_pass.h
@@ -92,7 +92,7 @@ class CC_EXPORT RenderPass {
   SharedQuadState* CreateAndAppendSharedQuadState();
   template <typename DrawQuadType>
   DrawQuadType* CreateAndAppendDrawQuad() {
-    scoped_ptr<DrawQuadType> draw_quad = DrawQuadType::Create();
+    scoped_ptr<DrawQuadType> draw_quad = make_scoped_ptr(new DrawQuadType);
     quad_list.push_back(draw_quad.template PassAs<DrawQuad>());
     return static_cast<DrawQuadType*>(quad_list.back());
   }