[cc] Store CCLayerImpls as scoped_ptrs

cc/CCLayerSorterTest.cpp

 // Copyright 2011 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"
 
 #include "CCLayerSorter.h"
 
 #include "CCLayerImpl.h"
 #include "CCMathUtil.h"
@@ skipping 185 matching lines @@
     // https://bugs.webkit.org/show_bug.cgi?id=75046. Before this fix, ordering was
     // accidentally reversed, causing bugs in z-index ordering on websites when
     // preserves3D triggered the CCLayerSorter.
 
     // Input list of layers: [1, 2, 3, 4, 5].
     // Expected output: [3, 4, 1, 2, 5].
     //    - 1, 2, and 5 do not have a 3d z difference, and therefore their relative ordering should be retained.
     //    - 3 and 4 do not have a 3d z difference, and therefore their relative ordering should be retained.
     //    - 3 and 4 should be re-sorted so they are in front of 1, 2, and 5.
 
-    OwnPtr<CCLayerImpl> layer1 = CCLayerImpl::create(1);
-    OwnPtr<CCLayerImpl> layer2 = CCLayerImpl::create(2);
-    OwnPtr<CCLayerImpl> layer3 = CCLayerImpl::create(3);
-    OwnPtr<CCLayerImpl> layer4 = CCLayerImpl::create(4);
-    OwnPtr<CCLayerImpl> layer5 = CCLayerImpl::create(5);
+    scoped_ptr<CCLayerImpl> layer1 = CCLayerImpl::create(1);
+    scoped_ptr<CCLayerImpl> layer2 = CCLayerImpl::create(2);
+    scoped_ptr<CCLayerImpl> layer3 = CCLayerImpl::create(3);
+    scoped_ptr<CCLayerImpl> layer4 = CCLayerImpl::create(4);
+    scoped_ptr<CCLayerImpl> layer5 = CCLayerImpl::create(5);
 
     WebTransformationMatrix BehindMatrix;
     BehindMatrix.translate3d(0, 0, 2);
     WebTransformationMatrix FrontMatrix;
     FrontMatrix.translate3d(0, 0, 1);
 
     layer1->setBounds(IntSize(10, 10));
     layer1->setContentBounds(IntSize(10, 10));
     layer1->setDrawTransform(BehindMatrix);
     layer1->setDrawsContent(true);
@@ skipping 37 matching lines @@
 
     ASSERT_EQ(static_cast<size_t>(5), layerList.size());
     EXPECT_EQ(3, layerList[0]->id());
     EXPECT_EQ(4, layerList[1]->id());
     EXPECT_EQ(1, layerList[2]->id());
     EXPECT_EQ(2, layerList[3]->id());
     EXPECT_EQ(5, layerList[4]->id());
 }
 
 } // namespace