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

chrome/browser/ui/views/location_bar/metro_pin_view.h

Index: chrome/browser/ui/views/location_bar/metro_pin_view.h
diff --git a/chrome/browser/ui/views/location_bar/metro_pin_view.h b/chrome/browser/ui/views/location_bar/metro_pin_view.h
new file mode 100644
index 0000000000000000000000000000000000000000..a561b24cbbfcb85fff24b232cae32163680cec5b
--- /dev/null
+++ b/chrome/browser/ui/views/location_bar/metro_pin_view.h
@@ -0,0 +1,47 @@
+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_METRO_PIN_VIEW_H_
+#define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_METRO_PIN_VIEW_H_
+
+#include "chrome/browser/ui/views/location_bar/touchable_location_bar_view.h"
+#include "ui/views/controls/image_view.h"
+
+class CommandUpdater;
+
+namespace views {
+class KeyEvent;
+class MouseEvent;
+}
+
+class MetroPinView
+    : public views::ImageView,
+      public TouchableLocationBarView {
+ public:
+  explicit MetroPinView(CommandUpdater* command_updater);
+  virtual ~MetroPinView();
+
+  // When the page is already pinned, clicking the pin view will cause the page
+  // to become unpinned.
+  void SetIsPinned(bool is_pinned);
+
+  // TouchableLocationBarView.
+  virtual int GetBuiltInHorizontalPadding() const OVERRIDE;
+
+ private:
+  // views::ImageView overrides:
+  virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
+  virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE;
+  virtual ui::GestureStatus OnGestureEvent(
+      const views::GestureEvent& event) OVERRIDE;
+  virtual bool OnKeyPressed(const views::KeyEvent& event) OVERRIDE;
+
+  // The CommandUpdater for the Browser object that owns the location bar.
+  CommandUpdater* command_updater_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(MetroPinView);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_METRO_PIN_VIEW_H_