improve API a little

toolkit/mozapps/extensions/public/nsIExtensionManager.idl

@@ -53,9 +53,10 @@ interface nsIExtensionManager : nsISupports
   void installTheme(in string aThemeID);
   void uninstallTheme(in string aThemeID);
 
-  const unsigned short MISMATCH_RESULT_OK       = 0x00;
-  const unsigned short MISMATCH_RESULT_RESTART  = 0x01;
-  unsigned short checkForMismatches();
+  /** 
+   * Returns true if mismatches were found and the app needs to restart. 
+   */
+  boolean checkForMismatches();
 
   void update([array, size_is(aItemCount)] in nsIUpdateItem aItems,
                in unsigned long aItemCount);

toolkit/mozapps/extensions/src/nsExtensionManager.js.in

@@ -170,7 +170,7 @@ nsExtensionManager.prototype = {
   
   checkForMismatches: function () 
   {
-    var rv = nsIExtensionManager.MISMATCH_RESULT_OK;
+    var rv = false;
     
     // Check to see if the version of the application that is being started
     // now is the same one that was started last time. 
@@ -200,7 +200,7 @@ nsExtensionManager.prototype = {
                                 nsIUpdateService.SOURCE_EVENT_MISMATCH,
                                 null);
         
-        rv = nsIExtensionManager.MISMATCH_RESULT_RESTART;
+        rv = true;
       }
     }