Backend for DevTools quota managements.

webkit/browser/quota/quota_manager.cc

Index: webkit/browser/quota/quota_manager.cc
diff --git a/webkit/browser/quota/quota_manager.cc b/webkit/browser/quota/quota_manager.cc
index ee5f81bdc0a85f46b65dc3776e3f31ad46a1e0f8..c86a6e69ad82b9a339886bc27c88b1055783526a 100644
--- a/webkit/browser/quota/quota_manager.cc
+++ b/webkit/browser/quota/quota_manager.cc
@@ -1076,6 +1076,20 @@ void QuotaManager::GetHostUsage(const std::string& host,
   GetUsageTracker(type)->GetHostUsage(host, callback);
 }
 
+void QuotaManager::GetHostUsage(const std::string& host,
+                                StorageType type,
+                                QuotaClient::ID client_id,
+                                const UsageCallback& callback) {
+  LazyInitialize();
+  ClientUsageTracker* tracker =
+      GetUsageTracker(type)->GetClientTracker(client_id);
+  if (!tracker) {
+    callback.Run(0);
+    return;
+  }
+  tracker->GetHostUsage(host, callback);
+}
+
 void QuotaManager::GetStatistics(
     std::map<std::string, std::string>* statistics) {
   DCHECK(statistics);