Moves MruWindowTracker into common

ash/common/wm/mru_window_tracker.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/mru_window_tracker.h"
+#include "ash/common/wm/mru_window_tracker.h"
 
 #include <algorithm>
 
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/focus_rules.h"
 #include "ash/common/wm/switchable_windows.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "base/bind.h"
@@ skipping 99 matching lines @@
 MruWindowTracker::~MruWindowTracker() {
   WmShell::Get()->RemoveActivationObserver(this);
   for (WmWindow* window : mru_windows_)
     window->RemoveObserver(this);
 }
 
 MruWindowTracker::WindowList MruWindowTracker::BuildMruWindowList() const {
   return BuildWindowListInternal(&mru_windows_, base::Bind(&CallCanActivate));
 }
 
-MruWindowTracker::WindowList
-MruWindowTracker::BuildWindowListIgnoreModal() const {
+MruWindowTracker::WindowList MruWindowTracker::BuildWindowListIgnoreModal()
+    const {
   return BuildWindowListInternal(nullptr,
                                  base::Bind(&IsWindowConsideredActivatable));
 }
 
 void MruWindowTracker::SetIgnoreActivations(bool ignore) {
   ignore_window_activations_ = ignore;
 
   // If no longer ignoring window activations, move currently active window
   // to front.
   if (!ignore)
@@ skipping 25 matching lines @@
 
 void MruWindowTracker::OnWindowDestroyed(WmWindow* window) {
   // It's possible for OnWindowActivated() to be called after
   // OnWindowDestroying(). This means we need to override OnWindowDestroyed()
   // else we may end up with a deleted window in |mru_windows_|.
   mru_windows_.remove(window);
   window->RemoveObserver(this);
 }
 
 }  // namespace ash