Add always-on-top property to app windows

chrome/browser/extensions/api/app_window/app_window_api.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/extensions/api/app_window/app_window_api.h"
 
 #include "apps/app_window_contents.h"
 #include "apps/native_app_window.h"
 #include "apps/shell_window.h"
 #include "apps/shell_window_registry.h"
@@ skipping 75 matching lines @@
  private:
   scoped_refptr<AppWindowCreateFunction> delayed_create_function_;
   content::NotificationRegistrar registrar_;
 };
 
 void SetCreateResultFromShellWindow(ShellWindow* window,
                                     base::DictionaryValue* result) {
   result->SetBoolean("fullscreen", window->GetBaseWindow()->IsFullscreen());
   result->SetBoolean("minimized", window->GetBaseWindow()->IsMinimized());
   result->SetBoolean("maximized", window->GetBaseWindow()->IsMaximized());
+  result->SetBoolean("alwaysOnTop", window->GetBaseWindow()->IsAlwaysOnTop());
   base::DictionaryValue* boundsValue = new base::DictionaryValue();
   gfx::Rect bounds = window->GetClientBounds();
   boundsValue->SetInteger("left", bounds.x());
   boundsValue->SetInteger("top", bounds.y());
   boundsValue->SetInteger("width", bounds.width());
   boundsValue->SetInteger("height", bounds.height());
   result->Set("bounds", boundsValue);
 }
 
 }  // namespace
@@ skipping 136 matching lines @@
       maximum_size.set_width(*options->max_width);
     if (options->max_height.get())
       maximum_size.set_height(*options->max_height);
 
     if (options->hidden.get())
       create_params.hidden = *options->hidden.get();
 
     if (options->resizable.get())
       create_params.resizable = *options->resizable.get();
 
+    if (GetCurrentChannel() <= chrome::VersionInfo::CHANNEL_DEV &&
+        options->always_on_top.get()) {
+      create_params.always_on_top = *options->always_on_top.get();
+    }
+
     if (options->type != extensions::api::app_window::WINDOW_TYPE_PANEL) {
       switch (options->state) {
         case extensions::api::app_window::STATE_NONE:
         case extensions::api::app_window::STATE_NORMAL:
           break;
         case extensions::api::app_window::STATE_FULLSCREEN:
           create_params.state = ui::SHOW_STATE_FULLSCREEN;
           break;
         case extensions::api::app_window::STATE_MAXIMIZED:
           create_params.state = ui::SHOW_STATE_MAXIMIZED;
@@ skipping 59 matching lines @@
           HadDevToolsAttached(created_view)) {
     new DevToolsRestorer(this, created_view);
     return true;
   }
 
   SendResponse(true);
   return true;
 }
 
 }  // namespace extensions