cc: Remove use of PassAs() and constructor-casting with scoped_ptr.

cc/trees/layer_tree_host_common_unittest.cc

 // 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 "cc/trees/layer_tree_host_common.h"
 
 #include <set>
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/transform_operations.h"
@@ skipping 7834 matching lines @@
       AnimationScaleFactorTrackingLayerImpl::Create(host_impl.active_tree(), 2);
   scoped_ptr<AnimationScaleFactorTrackingLayerImpl> child =
       AnimationScaleFactorTrackingLayerImpl::Create(host_impl.active_tree(), 3);
   scoped_ptr<AnimationScaleFactorTrackingLayerImpl> grand_child =
       AnimationScaleFactorTrackingLayerImpl::Create(host_impl.active_tree(), 4);
 
   AnimationScaleFactorTrackingLayerImpl* parent_raw = parent.get();
   AnimationScaleFactorTrackingLayerImpl* child_raw = child.get();
   AnimationScaleFactorTrackingLayerImpl* grand_child_raw = grand_child.get();
 
-  child->AddChild(grand_child.PassAs<LayerImpl>());
-  parent->AddChild(child.PassAs<LayerImpl>());
-  grand_parent->AddChild(parent.PassAs<LayerImpl>());
+  child->AddChild(grand_child.Pass());
+  parent->AddChild(child.Pass());
+  grand_parent->AddChild(parent.Pass());
 
   SetLayerPropertiesForTesting(grand_parent.get(),
                                identity_matrix,
                                gfx::Point3F(),
                                gfx::PointF(),
                                gfx::Size(1, 2),
                                true,
                                false);
   SetLayerPropertiesForTesting(parent_raw,
                                identity_matrix,
@@ skipping 742 matching lines @@
   // by the viewport.
   EXPECT_EQ(gfx::Rect(768 / 2, 582 / 2), root->visible_content_rect());
 
   // Layers drawing to a child render surface should still have their visible
   // content rect clipped by the viewport.
   EXPECT_EQ(gfx::Rect(768 / 2, 582 / 2), content->visible_content_rect());
 }
 
 }  // namespace
 }  // namespace cc