Add create note palette action.

ash/common/system/chromeos/palette/tools/create_note_action.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/system/chromeos/palette/tools/create_note_action.h"
+
+#include "ash/common/palette_delegate.h"
+#include "ash/common/system/chromeos/palette/palette_ids.h"
+#include "ash/common/wm_shell.h"
+#include "grit/ash_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace ash {
+
+// static
+bool CreateNoteAction::IsAvailable() {
+  return WmShell::Get()->palette_delegate()->HasNoteApp();
+}
+
+CreateNoteAction::CreateNoteAction(Delegate* delegate)
+    : CommonPaletteTool(delegate) {}
+
+CreateNoteAction::~CreateNoteAction() {}
+
+PaletteGroup CreateNoteAction::GetGroup() const {
+  return PaletteGroup::ACTION;
+}
+
+PaletteToolId CreateNoteAction::GetToolId() const {
+  return PaletteToolId::CREATE_NOTE;
+}
+
+void CreateNoteAction::OnEnable() {
+  CommonPaletteTool::OnEnable();
+
+  WmShell::Get()->palette_delegate()->CreateNote();
+
+  delegate()->DisableTool(GetToolId());
+  delegate()->HidePalette();
+}
+
+views::View* CreateNoteAction::CreateView() {
+  if (!IsAvailable())
+    return nullptr;
+
+  return CreateDefaultView(
+      l10n_util::GetStringUTF16(IDS_ASH_PALETTE_CREATE_NOTE_ACTION));
+}
+
+gfx::VectorIconId CreateNoteAction::GetPaletteIconId() {
+  return gfx::VectorIconId::PALETTE_ACTION_CREATE_NOTE;
+}
+
+}  // namespace ash