Use centered app list position whenever virtual keyboard is allowed.

chrome/browser/ui/app_list/app_list_view_delegate.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 "chrome/browser/ui/app_list/app_list_view_delegate.h"
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
@@ skipping 27 matching lines @@
 #include "ui/app_list/app_list_view_delegate_observer.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/speech_ui_model.h"
 #include "ui/base/resource/resource_bundle.h"
 
 #if defined(USE_AURA)
 #include "ui/keyboard/keyboard_util.h"
 #endif
 
 #if defined(USE_ASH)
+#include "ash/shell.h"
+#include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h"
 #endif
 
 #if defined(OS_WIN)
 #include "chrome/browser/web_applications/web_app_win.h"
 #endif
 
 namespace {
 
 const int kAutoLaunchDefaultTimeoutMilliSec = 50;
@@ skipping 364 matching lines @@
     return true;
 
   // keyboard depends upon Aura.
 #if defined(USE_AURA)
   // If the virtual keyboard is enabled, use the new app list position. The old
   // position is too tall, and doesn't fit in the left-over screen space.
   if (keyboard::IsKeyboardEnabled())
     return true;
 #endif
 
+#if defined(USE_ASH)
+  // If it is at all possible to enter maximize mode in this configuration
+  // (which has a virtual keyboard), we should use the experimental position.
+  // This avoids having the app list change shape and position as the user
+  // enters and exits maximize mode.
+  if (ash::Shell::HasInstance() &&
+      ash::Shell::GetInstance()
+          ->maximize_mode_controller()
+          ->CanEnterMaximizeMode()) {
+    return true;
+  }
+#endif
+
   return false;
 }
 
 void AppListViewDelegate::AddObserver(
     app_list::AppListViewDelegateObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void AppListViewDelegate::RemoveObserver(
     app_list::AppListViewDelegateObserver* observer) {
   observers_.RemoveObserver(observer);
 }