wm: Do not resize when switching users if window is already maximized.

chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.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 "chrome/browser/ui/ash/multi_user/user_switch_animator_chromeos.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
@@ skipping 124 matching lines @@
   FinalizeAnimation();
 }
 
 // static
 bool UserSwitchAnimatorChromeOS::CoversScreen(aura::Window* window) {
   // Full screen covers the screen naturally. Since a normal window can have the
   // same size as the work area, we only compare the bounds against the work
   // area.
   if (ash::wm::GetWindowState(window)->IsFullscreen())
     return true;
-  gfx::Rect bounds = window->GetBoundsInRootWindow();
+  gfx::Rect bounds = window->GetBoundsInScreen();
   gfx::Rect work_area =
       display::Screen::GetScreen()->GetDisplayNearestWindow(window).work_area();
   bounds.Intersect(work_area);
   return work_area == bounds;
 }
 
 void UserSwitchAnimatorChromeOS::AdvanceUserTransitionAnimation() {
   DCHECK_NE(animation_step_, ANIMATION_STEP_ENDED);
 
   TransitionWallpaper(animation_step_);
@@ skipping 277 matching lines @@
         if (itr != window_to_entry_map.end()) {
           windows_by_account_id_[itr->second->show_for_user()].push_back(
               child_window);
         }
       }
     }
   }
 }
 
 }  // namespace chrome