Initial IndexedDBQuotaClient implementation

content/browser/in_process_webkit/indexed_db_quota_client.h

Index: content/browser/in_process_webkit/indexed_db_quota_client.h
diff --git a/content/browser/in_process_webkit/indexed_db_quota_client.h b/content/browser/in_process_webkit/indexed_db_quota_client.h
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+// 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 CONTENT_BROWER_IN_PROCESS_WEBKIT_QUOTA_CLIENT_H_
+#define CONTENT_BROWER_IN_PROCESS_WEBKIT_QUOTA_CLIENT_H_
+
+#include <set>
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/message_loop_proxy.h"
+#include "webkit/quota/quota_client.h"
+#include "webkit/quota/quota_task.h"
+#include "webkit/quota/quota_types.h"
+
+class IndexedDBContext;
+
+// A QuotaClient implementation to integrate IndexedDB
+// with the quota  management system. This interface is used
+// on the IO thread by the quota manager.
+class IndexedDBQuotaClient : public quota::QuotaClient,
+                             public quota::QuotaTaskObserver {
+ public:
+  IndexedDBQuotaClient(
+      base::MessageLoopProxy* tracker_thread,
+      IndexedDBContext* indexed_db_context);
+  virtual ~IndexedDBQuotaClient();
+
+  // QuotaClient method overrides
+  virtual ID id() const OVERRIDE;
+  virtual void OnQuotaManagerDestroyed() OVERRIDE;
+  virtual void GetOriginUsage(const GURL& origin_url,
+                              quota::StorageType type,
+                              GetUsageCallback* callback) OVERRIDE;
+  virtual void GetOriginsForType(quota::StorageType type,
+                                 GetOriginsCallback* callback) OVERRIDE;
+  virtual void GetOriginsForHost(quota::StorageType type,
+                                 const std::string& host,
+                                 GetOriginsCallback* callback) OVERRIDE;
+  virtual void DeleteOriginData(const GURL& origin,
+                                quota::StorageType type,
+                                DeletionCallback* callback) OVERRIDE;
+ private:
+  class HelperTask;
+  class GetOriginUsageTask;
+  class GetOriginsTaskBase;
+  class GetAllOriginsTask;
+  class GetOriginsForHostTask;
+
+  typedef quota::CallbackQueueMap1
+      <GetUsageCallback*,
+       GURL,  // origin
+       int64
+      > UsageForOriginCallbackMap;
+  typedef quota::CallbackQueue1
+      <GetOriginsCallback*,
+       const std::set<GURL>&
+      > OriginsForTypeCallbackQueue;
+  typedef quota::CallbackQueueMap1
+      <GetOriginsCallback*,
+       std::string,  // host
+       const std::set<GURL>&
+      > OriginsForHostCallbackMap;
+
+  void DidGetOriginUsage(const GURL& origin_url, int64 usage);
+  void DidGetAllOrigins(const std::set<GURL>& origins);
+  void DidGetOriginsForHost(
+      const std::string& host, const std::set<GURL>& origins);
+
+  scoped_refptr<base::MessageLoopProxy> webkit_thread_message_loop_;
+  scoped_refptr<IndexedDBContext> indexed_db_context_;
+  UsageForOriginCallbackMap usage_for_origin_callbacks_;
+  OriginsForTypeCallbackQueue origins_for_type_callbacks_;
+  OriginsForHostCallbackMap origins_for_host_callbacks_;
+
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBQuotaClient);
+};
+
+#endif  // CONTENT_BROWER_IN_PROCESS_WEBKIT_QUOTA_CLIENT_H_