Move even more from WmShell to Shell

ash/common/wm/window_cycle_controller.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/common/wm/window_cycle_controller.h"
 
 #include "ash/common/metrics/task_switch_source.h"
 #include "ash/common/session/session_controller.h"
 #include "ash/common/wm/mru_window_tracker.h"
 #include "ash/common/wm/window_cycle_event_filter.h"
 #include "ash/common/wm/window_cycle_list.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/shell.h"
 #include "base/metrics/histogram_macros.h"
 
 namespace ash {
 
 namespace {
 
 // Returns the most recently active window from the |window_list| or nullptr
 // if the list is empty.
 WmWindow* GetActiveWindow(const MruWindowTracker::WindowList& window_list) {
   return window_list.empty() ? nullptr : window_list[0];
@@ skipping 21 matching lines @@
     return;
 
   if (!IsCycling())
     StartCycling();
 
   Step(direction);
 }
 
 void WindowCycleController::StartCycling() {
   MruWindowTracker::WindowList window_list =
-      WmShell::Get()->mru_window_tracker()->BuildMruWindowList();
+      Shell::Get()->mru_window_tracker()->BuildMruWindowList();
   // Exclude windows:
   // - non user positionable windows, such as extension popups.
   // - windows being dragged
   // - the AppList window, which will hide as soon as cycling starts
   //   anyway. It doesn't make sense to count it as a "switchable" window, yet
   //   a lot of code relies on the MRU list returning the app window. If we
   //   don't manually remove it, the window cycling UI won't crash or misbehave,
   //   but there will be a flicker as the target window changes. Also exclude
   //   unselectable windows such as extension popups.
   auto window_is_ineligible = [](WmWindow* window) {
@@ skipping 32 matching lines @@
 void WindowCycleController::Step(Direction direction) {
   DCHECK(window_cycle_list_.get());
   window_cycle_list_->Step(direction);
 }
 
 void WindowCycleController::StopCycling() {
   UMA_HISTOGRAM_COUNTS_100("Ash.WindowCycleController.SelectionDepth",
                            window_cycle_list_->current_index() + 1);
   window_cycle_list_.reset();
 
-  WmWindow* active_window_after_window_cycle = GetActiveWindow(
-      WmShell::Get()->mru_window_tracker()->BuildMruWindowList());
+  WmWindow* active_window_after_window_cycle =
+      GetActiveWindow(Shell::Get()->mru_window_tracker()->BuildMruWindowList());
 
   // Remove our key event filter.
   event_filter_.reset();
   UMA_HISTOGRAM_MEDIUM_TIMES("Ash.WindowCycleController.CycleTime",
                              base::Time::Now() - cycle_start_time_);
 
   if (active_window_after_window_cycle != nullptr &&
       active_window_before_window_cycle_ != active_window_after_window_cycle) {
     WmShell::Get()->RecordTaskSwitchMetric(
         TaskSwitchSource::WINDOW_CYCLE_CONTROLLER);
   }
   active_window_before_window_cycle_ = nullptr;
 }
 
 }  // namespace ash