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

cc/quads/yuv_video_draw_quad.cc

Index: cc/quads/yuv_video_draw_quad.cc
diff --git a/cc/quads/yuv_video_draw_quad.cc b/cc/quads/yuv_video_draw_quad.cc
index bb8ec739060f8820c4f3208bb5f7d8403150e399..d2443ba9d97d7a42b92c6e5f2c76a9f8b4a5e70f 100644
--- a/cc/quads/yuv_video_draw_quad.cc
+++ b/cc/quads/yuv_video_draw_quad.cc
@@ -17,10 +17,6 @@ YUVVideoDrawQuad::YUVVideoDrawQuad()
       a_plane_resource_id(0) {}
 YUVVideoDrawQuad::~YUVVideoDrawQuad() {}
 
-scoped_ptr<YUVVideoDrawQuad> YUVVideoDrawQuad::Create() {
-  return make_scoped_ptr(new YUVVideoDrawQuad);
-}
-
 void YUVVideoDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                               const gfx::Rect& rect,
                               const gfx::Rect& opaque_rect,