Move yet more from WmShell to Shell

ash/common/wm/maximize_mode/maximize_mode_event_handler.cc

 // Copyright 2016 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/maximize_mode/maximize_mode_event_handler.h"
 
 #include "ash/common/session/session_controller.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
@@ skipping 13 matching lines @@
 }  // namespace
 
 MaximizeModeEventHandler::MaximizeModeEventHandler() {}
 
 MaximizeModeEventHandler::~MaximizeModeEventHandler() {}
 
 bool MaximizeModeEventHandler::ToggleFullscreen(const ui::TouchEvent& event) {
   if (event.type() != ui::ET_TOUCH_PRESSED)
     return false;
 
-  const SessionController* controller = WmShell::Get()->session_controller();
+  const SessionController* controller = Shell::Get()->session_controller();
 
   if (controller->IsScreenLocked() ||
       controller->GetSessionState() != session_manager::SessionState::ACTIVE) {
     return false;
   }
 
   // Find the active window (from the primary screen) to un-fullscreen.
   WmWindow* window = WmShell::Get()->GetActiveWindow();
   if (!window)
     return false;
@@ skipping 18 matching lines @@
     return false;
   }
 
   WMEvent toggle_fullscreen(WM_EVENT_TOGGLE_FULLSCREEN);
   window->GetWindowState()->OnWMEvent(&toggle_fullscreen);
   return true;
 }
 
 }  // namespace wm
 }  // namespace ash