Add pin icon to the omnibar in windows 8 metro mode.

chrome/browser/ui/views/location_bar/metro_pin_view.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/views/location_bar/metro_pin_view.h"
+
+#include "base/utf_string_conversions.h"
+#include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/command_updater.h"
+#include "chrome/browser/ui/view_ids.h"
+#include "chrome/browser/ui/views/browser_dialogs.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+#include "ui/base/accessibility/accessible_view_state.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+
+MetroPinView::MetroPinView(CommandUpdater* command_updater)
+    : ALLOW_THIS_IN_INITIALIZER_LIST(ImageButton(this)),
+      command_updater_(command_updater) {
+  set_id(VIEW_ID_METRO_PIN);
+  SetImageAlignment(ALIGN_CENTER, ALIGN_MIDDLE);
+  SetAccessibleName(l10n_util::GetStringUTF16(IDS_ACCNAME_METRO_PIN));
+  TouchableLocationBarView::Init(this);
+  SetIsPinned(false);
+}
+
+MetroPinView::~MetroPinView() {}
+
+void MetroPinView::SetIsPinned(bool is_pinned) {
+  SetTooltipText(l10n_util::GetStringUTF16(
+      is_pinned ? IDS_TOOLTIP_METRO_PINNED : IDS_TOOLTIP_METRO_PIN));
+  SetImage(BS_NORMAL, ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
+      is_pinned ? IDR_METRO_PINNED : IDR_METRO_PIN));
+}
+
+void MetroPinView::ButtonPressed(Button* sender, const views::Event& event) {
+  command_updater_->ExecuteCommand(IDC_METRO_PIN_TO_START_SCREEN);
+}
+
+int MetroPinView::GetBuiltInHorizontalPadding() const {
+  return GetBuiltInHorizontalPaddingImpl();
+}