[cc] Store CCLayerImpls as scoped_ptrs

cc/TextureLayerChromium.cpp

 // Copyright 2010 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 "config.h"
 
 #if USE(ACCELERATED_COMPOSITING)
 
 #include "TextureLayerChromium.h"
 
@@ skipping 24 matching lines @@
 TextureLayerChromium::~TextureLayerChromium()
 {
     if (layerTreeHost()) {
         if (m_textureId)
             layerTreeHost()->acquireLayerTextures();
         if (m_rateLimitContext && m_client)
             layerTreeHost()->stopRateLimiter(m_client->context());
     }
 }
 
-PassOwnPtr<CCLayerImpl> TextureLayerChromium::createCCLayerImpl()
+scoped_ptr<CCLayerImpl> TextureLayerChromium::createCCLayerImpl()
 {
-    return CCTextureLayerImpl::create(m_layerId);
+    return CCTextureLayerImpl::create(m_layerId).PassAs<CCLayerImpl>();
 }
 
 void TextureLayerChromium::setFlipped(bool flipped)
 {
     m_flipped = flipped;
     setNeedsCommit();
 }
 
 void TextureLayerChromium::setUVRect(const FloatRect& rect)
 {
@@ skipping 67 matching lines @@
 
     CCTextureLayerImpl* textureLayer = static_cast<CCTextureLayerImpl*>(layer);
     textureLayer->setFlipped(m_flipped);
     textureLayer->setUVRect(m_uvRect);
     textureLayer->setPremultipliedAlpha(m_premultipliedAlpha);
     textureLayer->setTextureId(m_textureId);
 }
 
 }
 #endif // USE(ACCELERATED_COMPOSITING)