Makes the launcher auto-hide for maximized windows. This turned out to

ash/wm/workspace/managed_workspace.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/workspace/managed_workspace.h"
 
 #include "ash/wm/window_util.h"
 
 namespace ash {
 namespace internal {
 
 ManagedWorkspace::ManagedWorkspace(WorkspaceManager* manager)
     : Workspace(manager, TYPE_MANAGED) {
 }
 
 ManagedWorkspace::~ManagedWorkspace() {
 }
 
 bool ManagedWorkspace::CanAdd(aura::Window* window) const {
   return !wm::IsWindowFullscreen(window) && !wm::IsWindowMaximized(window);
 }
 
 void ManagedWorkspace::OnWindowAddedAfter(aura::Window* window,
                                           aura::Window* after) {
 }
 
 void ManagedWorkspace::OnWindowRemoved(aura::Window* window) {
 }
 
-void ManagedWorkspace::OnWorkspaceSizeChanged(const gfx::Rect& old_bounds) {
-}
-
 }  // namespace internal
 }  // namespace ash