Move Copy method from DrawQuad to RenderPass

cc/quads/render_pass_draw_quad.cc

Index: cc/quads/render_pass_draw_quad.cc
diff --git a/cc/quads/render_pass_draw_quad.cc b/cc/quads/render_pass_draw_quad.cc
index 91cb6aaa3e0350796c8835a8b85e3b4c64ee35e6..310ebc2a26d118ac6ad2ff15e2ac7955c5531c39 100644
--- a/cc/quads/render_pass_draw_quad.cc
+++ b/cc/quads/render_pass_draw_quad.cc
@@ -24,16 +24,6 @@ scoped_ptr<RenderPassDrawQuad> RenderPassDrawQuad::Create() {
   return make_scoped_ptr(new RenderPassDrawQuad);
 }
 
-scoped_ptr<RenderPassDrawQuad> RenderPassDrawQuad::Copy(
-    const SharedQuadState* copied_shared_quad_state,
-    RenderPass::Id copied_render_pass_id) const {
-  scoped_ptr<RenderPassDrawQuad> copy_quad(
-      new RenderPassDrawQuad(*MaterialCast(this)));
-  copy_quad->shared_quad_state = copied_shared_quad_state;
-  copy_quad->render_pass_id = copied_render_pass_id;
-  return copy_quad.Pass();
-}
-
 void RenderPassDrawQuad::SetNew(
     const SharedQuadState* shared_quad_state,
     const gfx::Rect& rect,