Fix remaining incompatibilities between scoped_ptr and unique_ptr.

ash/wm/window_state.cc

 // Copyright 2013 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/wm/window_state.h"
 
 #include <utility>
 
 #include "ash/ash_switches.h"
 #include "ash/root_window_controller.h"
@@ skipping 74 matching lines @@
 }  // namespace
 
 WindowState::~WindowState() {
   // WindowState is registered as an owned property of |window_|, and window
   // unregisters all of its observers in its d'tor before destroying its
   // properties. As a result, window_->RemoveObserver() doesn't need to (and
   // shouldn't) be called here.
 }
 
 bool WindowState::HasDelegate() const {
-  return delegate_;
+  return !!delegate_;
 }
 
 void WindowState::SetDelegate(scoped_ptr<WindowStateDelegate> delegate) {
   DCHECK(!delegate_.get());
   delegate_ = std::move(delegate);
 }
 
 WindowStateType WindowState::GetStateType() const {
   return current_state_->GetType();
 }
@@ skipping 391 matching lines @@
   }
   return settings;
 }
 
 const WindowState* GetWindowState(const aura::Window* window) {
   return GetWindowState(const_cast<aura::Window*>(window));
 }
 
 }  // namespace wm
 }  // namespace ash