Plumb invalidations from Tango to the extensions code for the Push Messaging API.

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index c326490a1a8cb6f32e3d039fe3a0dcb5e02b4897..2a740776cd55ae1294a5a668ebca54918eda0e40 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -292,6 +292,9 @@ class ExtensionService
   // Start up the extension event routers.
   void InitEventRouters();
 
+  // Called when the associated Profile is going to be destroyed.
+  void Shutdown();
+
   // Look up an extension by ID.  Does not include terminated
   // extensions.
   virtual const extensions::Extension* GetExtensionById(