ash: Add a bluetooth entry in the uber tray.

ash/system/tray/tray_utils.h

Index: ash/system/tray/tray_utils.h
diff --git a/ash/system/tray/tray_utils.h b/ash/system/tray/tray_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..bca5e4cd0fbdbe8ed85a1d04c49ba692358b414a
--- /dev/null
+++ b/ash/system/tray/tray_utils.h
@@ -0,0 +1,67 @@
+// 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 ASH_SYSTEM_TRAY_TRAY_UTILS_H_
+#define ASH_SYSTEM_TRAY_TRAY_UTILS_H_
+#pragma once
+
+#include "ui/gfx/font.h"
+#include "ui/gfx/size.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/view.h"
+
+class SkBitmap;
+
+namespace ash {
+namespace internal {
+
+// An image view with that always has a fixed width (kTrayPopupDetailsIconWidth)
+class FixedWidthImageView : public views::ImageView {
+ public:
+  FixedWidthImageView();
+  virtual ~FixedWidthImageView();
+
+ private:
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(FixedWidthImageView);
+};
+
+class ViewClickListener {
+ public:
+  virtual ~ViewClickListener() {}
+  virtual void ClickedOn(views::View* sender) = 0;
+};
+
+// A view that changes background color on hover, and triggers a callback in the
+// associated ViewClickListener on click.
+class HoverHighlightView : public views::View {
+ public:
+  explicit HoverHighlightView(ViewClickListener* listener);
+  virtual ~HoverHighlightView();
+
+  // Convenience function for adding an icon and a label.
+  void AddIconAndLabel(const SkBitmap& image,
+                       const string16& text,
+                       gfx::Font::FontStyle style);
+
+  // Convenience function for adding a label with padding on the left for a
+  // blank icon.
+  void AddLabel(const string16& text);
+
+ private:
+  // Overridden from views::View.
+  virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
+  virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE;
+
+  ViewClickListener* listener_;
+
+  DISALLOW_COPY_AND_ASSIGN(HoverHighlightView);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_TRAY_TRAY_UTILS_H_