Allow a Views client to provide a default frameview for window widgets.

ash/shell.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/shell.h"
 
 #include <algorithm>
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_filter.h"
 #include "ash/app_list/app_list.h"
 #include "ash/ash_switches.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/ime/input_method_event_filter.h"
 #include "ash/launcher/launcher.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_window_ids.h"
 #include "ash/tooltips/tooltip_controller.h"
 #include "ash/wm/activation_controller.h"
 #include "ash/wm/compact_layout_manager.h"
 #include "ash/wm/compact_status_area_layout_manager.h"
 #include "ash/wm/default_container_event_filter.h"
 #include "ash/wm/default_container_layout_manager.h"
+#include "ash/wm/dialog_frame_view.h"
 #include "ash/wm/modal_container_layout_manager.h"
 #include "ash/wm/power_button_controller.h"
 #include "ash/wm/root_window_event_filter.h"
 #include "ash/wm/root_window_layout_manager.h"
 #include "ash/wm/shadow_controller.h"
 #include "ash/wm/shelf_layout_manager.h"
 #include "ash/wm/stacking_controller.h"
 #include "ash/wm/status_area_layout_manager.h"
 #include "ash/wm/toplevel_layout_manager.h"
 #include "ash/wm/toplevel_window_event_filter.h"
@@ skipping 352 matching lines @@
   return false;
 }
 
 bool Shell::IsModalWindowOpen() const {
   aura::Window* modal_container =
       ash::Shell::GetInstance()->GetContainer(
           internal::kShellWindowId_AlwaysOnTopContainer);
   return !modal_container->children().empty();
 }
 
+views::NonClientFrameView* Shell::CreateDefaultNonClientFrameView(
+    views::Widget* widget) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kAuraGoogleDialogFrames)) {
+    return new internal::DialogFrameView;
+  }
+  return NULL;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, private:
 
 void Shell::EnableWorkspaceManager() {
   aura::Window* default_container =
       GetContainer(internal::kShellWindowId_DefaultContainer);
 
   workspace_controller_.reset(
       new internal::WorkspaceController(default_container));
   workspace_controller_->SetLauncherModel(launcher_->model());
   default_container->SetEventFilter(
       new internal::DefaultContainerEventFilter(default_container));
   default_container->SetLayoutManager(
       new internal::DefaultContainerLayoutManager(
           workspace_controller_->workspace_manager()));
 }
 
 }  // namespace ash