Minor cleanup to UsageTracker.IsWorking().

webkit/quota/usage_tracker.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_QUOTA_USAGE_TRACKER_H_
 #define WEBKIT_QUOTA_USAGE_TRACKER_H_
 #pragma once
 
 #include <list>
 #include <map>
@@ skipping 24 matching lines @@
   virtual ~UsageTracker();
 
   StorageType type() const { return type_; }
   ClientUsageTracker* GetClientTracker(QuotaClient::ID client_id);
 
   void GetGlobalUsage(GlobalUsageCallback* callback);
   void GetHostUsage(const std::string& host, HostUsageCallback* callback);
   void UpdateUsageCache(QuotaClient::ID client_id,
                         const GURL& origin,
                         int64 delta);
-
   void GetCachedOrigins(std::set<GURL>* origins) const;
-  bool IsWorking();
+  bool IsWorking() const {
+    return global_usage_callbacks_.HasCallbacks() ||
+           host_usage_callbacks_.HasAnyCallbacks();
+  }
 
  private:
   struct TrackingInfo {
     TrackingInfo() : pending_clients(0), usage(0), unlimited_usage(0) {}
     int pending_clients;
     int64 usage;
     int64 unlimited_usage;
   };
 
   typedef std::map<QuotaClient::ID, ClientUsageTracker*> ClientTrackerMap;
@@ skipping 71 matching lines @@
   HostUsageCallbackMap host_usage_callbacks_;
 
   scoped_refptr<SpecialStoragePolicy> special_storage_policy_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientUsageTracker);
 };
 
 }  // namespace quota
 
 #endif  // WEBKIT_QUOTA_USAGE_TRACKER_H_