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 035468adc64aee57e346adb662874c1022e5d983..5feedba274804bfa40aa81f2b59293816246c5be 100644
--- a/chrome/browser/chromeos/frame/browser_view.h
+++ b/chrome/browser/chromeos/frame/browser_view.h
@@ -46,6 +46,19 @@ 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);
+
+  // Check if a button is currently contained in the view.
+  bool ContainsButton(StatusAreaButton* button);
+
+  static BrowserView* GetBrowserViewForBrowser(Browser* browser);
+
   // BrowserView implementation.
   virtual void Init() OVERRIDE;
   virtual void Show() OVERRIDE;