Only support left/right maximizing at 50% width when the --ash-enable-alternate-caption-button

ash/wm/window_util.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/window_util.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/root_window_controller.h"
@@ skipping 57 matching lines @@
   if (lockscreen->Contains(window))
     return false;
 
   return true;
 }
 
 bool CanResizeWindow(const aura::Window* window) {
   return window->GetProperty(aura::client::kCanResizeKey);
 }
 
-bool CanSnapWindow(aura::Window* window) {
-  if (!CanResizeWindow(window))
-    return false;
-  // If a window has a maximum size defined, snapping may make it too big.
-  return window->delegate() ? window->delegate()->GetMaximumSize().IsEmpty() :
-                              true;
-}
-
 bool IsWindowNormal(const aura::Window* window) {
   return IsWindowStateNormal(window->GetProperty(aura::client::kShowStateKey));
 }
 
 bool IsWindowStateNormal(ui::WindowShowState state) {
   return state == ui::SHOW_STATE_NORMAL || state == ui::SHOW_STATE_DEFAULT;
 }
 
 bool IsWindowMaximized(const aura::Window* window) {
   return window->GetProperty(aura::client::kShowStateKey) ==
@@ skipping 107 matching lines @@
     return false;
   aura::Window* window_container =
       ash::Shell::GetContainer(target_root, window->parent()->id());
   // Move the window to the target launcher.
   window_container->AddChild(window);
   return true;
 }
 
 }  // namespace wm
 }  // namespace ash