Adding an experimental app notification API.

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 8f443d1030a52072899c5c389ad24080fe5f25c2..c52448de34e9f7f0a743a63423cbba239ed51af4 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -1028,4 +1028,8 @@ struct UnloadedExtensionInfo {
   UnloadedExtensionInfo(const Extension* extension, Reason reason);
 };
 
+struct AppNotificationInfo {
+  std::string extension_id;
+};

[Finnur, 2011/06/20 12:21:46]

This struct doesn't seem to be used anywhere and there is another struct
AppNotificationInfo with more params in extension_app_api.h. Is this struct
required still?

[asargent_no_longer_on_chrome, 2011/06/21 18:10:11]

Good catch, I forgot to remove this from the CL. 

+
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_