Flush literals from cache on :rehash.

common/modules/base.jsm

@@ -972,8 +972,16 @@ Class.prototype = {
                     util.rehashing && !isinstance(Cu.getGlobalForObject(callback), ["BackstagePass"]))
                 return;
             this.timeouts.splice(this.timeouts.indexOf(timer), 1);
-            util.trapErrors(callback, this);
+            try {
+                callback.call(this);
+            }
+            catch (e) {
+                util.dump("Error invoking timer callback registered at " +
+                          [frame.filename, frame.lineNumber, ""].join(":"));
+                Cu.reportError(e);
+            }
         };
+        let frame = Cs.caller;
         let timer = services.Timer(timeout_notify, timeout || 0, services.Timer.TYPE_ONE_SHOT);
         this.timeouts.push(timer);
         return timer;

common/modules/cache.jsm

@@ -138,9 +138,15 @@ var Cache = Module("Cache", XPCOM(Ci.nsIRequestObserver), {
         }
     }),
 
-    flush: function flush() {
-        this.storage.clear();
-        this.flushDiskCache();
+    flush: function flush(filter) {
+        if (filter) {
+            this.storage.keys().filter(filter)
+                .forEach(bind("remove", this.storage));
+        }
+        else {
+            this.storage.clear();
+            this.flushDiskCache();
+        }
     },
 
     flushDiskCache: function flushDiskCache() {

common/modules/util.jsm

@@ -1366,6 +1366,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         storage.storeForSession("commandlineArgs", args);
         this.timeout(function () {
             this.flushCache();
+            cache.flush(bind("test", /^literal:/));
             this.rehashing = true;
             let addon = config.addon;
             addon.userDisabled = true;