Initial implementation of status tray functionality (mac-only, currently).

chrome/browser/cocoa/status_icons/status_icon_mac.h

Index: chrome/browser/cocoa/status_icons/status_icon_mac.h
diff --git a/chrome/browser/cocoa/status_icons/status_icon_mac.h b/chrome/browser/cocoa/status_icons/status_icon_mac.h
new file mode 100644
index 0000000000000000000000000000000000000000..d606429046e0cbdeea3f14e87cf7a1467c7dc283
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+++ b/chrome/browser/cocoa/status_icons/status_icon_mac.h
@@ -0,0 +1,48 @@
+// Copyright (c) 2010 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_COCOA_STATUS_ICONS_STATUS_ICON_MAC_H_
+#define CHROME_BROWSER_COCOA_STATUS_ICONS_STATUS_ICON_MAC_H_
+
+#include <vector>
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/scoped_nsobject.h"
+#include "base/string16.h"
+#include "chrome/browser/status_icons/status_icon.h"
+
+class SkBitmap;
+@class NSStatusItem;
+@class StatusItemController;
+
+class StatusIconMac : public StatusIcon {
+ public:
+  StatusIconMac();
+  virtual ~StatusIconMac();
+
+  // Sets the image associated with this status icon.
+  virtual void SetImage(const SkBitmap& image);
+
+  // Sets the hover text for this status icon.
+  virtual void SetToolTip(const string16& tool_tip);
+
+  // Adds/removes a observer for status bar events.
+  virtual void AddObserver(StatusIcon::StatusIconObserver* observer);
+  virtual void RemoveObserver(StatusIcon::StatusIconObserver* observer);
+
+  // Called back if the user clicks on the status bar icon.
+  void HandleClick();
+
+ private:
+  // Getter for item_ that allows lazy initialization.
+  NSStatusItem* item();
+  scoped_nsobject<NSStatusItem> item_;
+
+  scoped_nsobject<StatusItemController> controller_;
+  std::vector<StatusIcon::StatusIconObserver*> observers_;
+};
+
+
+#endif // CHROME_BROWSER_COCOA_STATUS_ICONS_STATUS_ICON_MAC_H_