Add create note palette action.

ash/common/wm_shell.cc

 // Copyright 2016 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/common/wm_shell.h"
 
 #include <utility>
 
 #include "ash/common/accelerators/accelerator_controller.h"
 #include "ash/common/accelerators/ash_focus_manager_factory.h"
@@ skipping 72 matching lines @@
   // ShelfItemDelegate subclasses it owns have complex cleanup to run (e.g. ARC
   // shelf items in Chrome) so explicitly shutdown early.
   shelf_model_->DestroyItemDelegates();
   // Must be destroyed before FocusClient.
   shelf_delegate_.reset();
 
   // Balances the Install() in Initialize().
   views::FocusManagerFactory::Install(nullptr);
 }
 
+void WmShell::SetPaletteDelegateForTesting(
+    std::unique_ptr<PaletteDelegate> palette_delegate) {
+  palette_delegate_ = std::move(palette_delegate);
+}
+
 void WmShell::OnMaximizeModeStarted() {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_, OnMaximizeModeStarted());
 }
 
 void WmShell::OnMaximizeModeEnded() {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_, OnMaximizeModeEnded());
 }
 
 void WmShell::NotifyFullscreenStateChanged(bool is_fullscreen,
                                            WmWindow* root_window) {
@@ skipping 185 matching lines @@
 void WmShell::DeleteToastManager() {
   toast_manager_.reset();
 }
 
 void WmShell::SetAcceleratorController(
     std::unique_ptr<AcceleratorController> accelerator_controller) {
   accelerator_controller_ = std::move(accelerator_controller);
 }
 
 }  // namespace ash