Revert 277208 "[PPAPI] Compositor API implementation."

ppapi/shared_impl/compositor_layer_data.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ppapi/shared_impl/compositor_layer_data.h"
-
-namespace ppapi {
-
-namespace {
-
-template<typename T>
-void Copy(scoped_ptr<T>* a, const scoped_ptr<T>& b) {
-  if (b) {
-    if (!(*a))
-      a->reset(new T());
-    **a = *b;
-  } else {
-    a->reset();
-  }
-}
-
-}  // namespace
-
-const CompositorLayerData& CompositorLayerData::operator=(
-    const CompositorLayerData& other) {
-  DCHECK(other.is_null() || other.is_valid());
-
-  common = other.common;
-  Copy(&color, other.color);
-  Copy(&texture, other.texture);
-  Copy(&image, other.image);
-
-  return *this;
-}
-
-}  // namespace ppapi