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

cc/quads/tile_draw_quad.cc

Index: cc/quads/tile_draw_quad.cc
diff --git a/cc/quads/tile_draw_quad.cc b/cc/quads/tile_draw_quad.cc
index 6e286077ffb1a636d11b52e983fb39552245c81b..839f0defbd3706e2b18dd14d605276754e03704d 100644
--- a/cc/quads/tile_draw_quad.cc
+++ b/cc/quads/tile_draw_quad.cc
@@ -17,10 +17,6 @@ TileDrawQuad::TileDrawQuad()
 TileDrawQuad::~TileDrawQuad() {
 }
 
-scoped_ptr<TileDrawQuad> TileDrawQuad::Create() {
-  return make_scoped_ptr(new TileDrawQuad);
-}
-
 void TileDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
                           const gfx::Rect& rect,
                           const gfx::Rect& opaque_rect,