Convert //ash from scoped_ptr to std::unique_ptr

ash/host/transformer_helper.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 "ash/host/transformer_helper.h"
 
 #include <utility>
 
 #include "ash/host/ash_window_tree_host.h"
 #include "ash/host/root_window_transformer.h"
@@ skipping 55 matching lines @@
 
 void TransformerHelper::Init() {
   SetTransform(gfx::Transform());
 }
 
 gfx::Insets TransformerHelper::GetHostInsets() const {
   return transformer_->GetHostInsets();
 }
 
 void TransformerHelper::SetTransform(const gfx::Transform& transform) {
-  scoped_ptr<RootWindowTransformer> transformer(new SimpleRootWindowTransformer(
-      ash_host_->AsWindowTreeHost()->window(), transform));
+  std::unique_ptr<RootWindowTransformer> transformer(
+      new SimpleRootWindowTransformer(ash_host_->AsWindowTreeHost()->window(),
+                                      transform));
   SetRootWindowTransformer(std::move(transformer));
 }
 
 void TransformerHelper::SetRootWindowTransformer(
-    scoped_ptr<RootWindowTransformer> transformer) {
+    std::unique_ptr<RootWindowTransformer> transformer) {
   transformer_ = std::move(transformer);
   aura::WindowTreeHost* host = ash_host_->AsWindowTreeHost();
   aura::Window* window = host->window();
   window->SetTransform(transformer_->GetTransform());
   // If the layer is not animating, then we need to update the root window
   // size immediately.
   if (!window->layer()->GetAnimator()->is_animating())
     host->UpdateRootWindowSize(host->GetBounds().size());
 }
 
@@ skipping 13 matching lines @@
   transform.Scale(1.0f / scale, 1.0f / scale);
   return transformer_->GetInverseTransform() * transform;
 }
 
 void TransformerHelper::UpdateWindowSize(const gfx::Size& host_size) {
   ash_host_->AsWindowTreeHost()->window()->SetBounds(
       transformer_->GetRootWindowBounds(host_size));
 }
 
 }  // namespace ash