ash: Remove use of ALLOW_THIS_IN_INITIALIZER_LIST.

ash/wm/activation_controller.cc

 // Copyright (c) 2012 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/activation_controller.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/activation_controller_delegate.h"
@@ skipping 131 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // ActivationController, public:
 
 ActivationController::ActivationController(
     aura::client::FocusClient* focus_client,
     ActivationControllerDelegate* delegate)
     : focus_client_(focus_client),
       updating_activation_(false),
       active_window_(NULL),
-      ALLOW_THIS_IN_INITIALIZER_LIST(observer_manager_(this)),
+      observer_manager_(this),
       delegate_(delegate) {
   aura::Env::GetInstance()->AddObserver(this);
   focus_client_->AddObserver(this);
 }
 
 ActivationController::~ActivationController() {
   aura::Env::GetInstance()->RemoveObserver(this);
   focus_client_->RemoveObserver(this);
 }
 
@@ skipping 260 matching lines @@
   aura::Window* window = static_cast<aura::Window*>(event->target());
   window = delegate_->WillFocusWindow(window);
   if (GetActiveWindow() != window) {
     aura::client::GetFocusClient(window)->FocusWindow(
         FindFocusableWindowFor(window));
   }
 }
 
 }  // namespace internal
 }  // namespace ash