Implement the status tray/icon API for ChromeOS.

chrome/browser/chromeos/frame/browser_view.h

Index: chrome/browser/chromeos/frame/browser_view.h
diff --git a/chrome/browser/chromeos/frame/browser_view.h b/chrome/browser/chromeos/frame/browser_view.h
index 21a0aefddb05e4f34b3d01ebc41dd9c67d7202dc..568698daa161669e8a88f4eefe4204b63b6081c1 100644
--- a/chrome/browser/chromeos/frame/browser_view.h
+++ b/chrome/browser/chromeos/frame/browser_view.h
@@ -56,6 +56,16 @@ class BrowserView : public ::BrowserView,
   explicit BrowserView(Browser* browser);
   virtual ~BrowserView();
 
+  // Adds a new tray icon/button to the Chrome OS Tray.
+  // Takes ownership of the button object.
+  void AddTrayButton(StatusAreaButton* button, bool bordered);
+
+  // Remove an existing tray button from the Chrome OS Tray.
+  // Pointer will become invalid after this call.
+  void RemoveTrayButton(StatusAreaButton* button);
+
+  static BrowserView* GetBrowserViewForBrowser(Browser* browser);
+
   // BrowserView implementation.
   virtual void Init() OVERRIDE;
   virtual void Show() OVERRIDE;