[ew] Move operation observers from QuotaUtil to FileSystemBackend.

storage/browser/fileapi/sandbox_file_system_backend_delegate.h

 // Copyright 2013 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 STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_DELEGATE_H_
 #define STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_DELEGATE_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "storage/browser/fileapi/file_system_backend.h"
 #include "storage/browser/fileapi/file_system_options.h"
 #include "storage/browser/fileapi/file_system_quota_util.h"
+#include "storage/browser/fileapi/task_runner_bound_observer_list.h"
 #include "storage/browser/storage_browser_export.h"
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace content {
 class SandboxFileSystemBackendDelegateTest;
 class SandboxFileSystemTestHelper;
 }
@@ skipping 106 matching lines @@
       const std::string& host,
       std::set<GURL>* origins) OVERRIDE;
   virtual int64 GetOriginUsageOnFileTaskRunner(
       FileSystemContext* context,
       const GURL& origin_url,
       FileSystemType type) OVERRIDE;
   virtual scoped_refptr<QuotaReservation>
       CreateQuotaReservationOnFileTaskRunner(
           const GURL& origin_url,
           FileSystemType type) OVERRIDE;
-  virtual void AddFileUpdateObserver(
-      FileSystemType type,
-      FileUpdateObserver* observer,
-      base::SequencedTaskRunner* task_runner) OVERRIDE;
-  virtual void AddFileChangeObserver(
-      FileSystemType type,
-      FileChangeObserver* observer,
-      base::SequencedTaskRunner* task_runner) OVERRIDE;
-  virtual void AddFileAccessObserver(
-      FileSystemType type,
-      FileAccessObserver* observer,
-      base::SequencedTaskRunner* task_runner) OVERRIDE;
+
+  // Adds an observer for the secified |type| of a file system, bound to
+  // |task_runner|.
+  virtual void AddFileUpdateObserver(FileSystemType type,
+                                     FileUpdateObserver* observer,
+                                     base::SequencedTaskRunner* task_runner);
+  virtual void AddFileChangeObserver(FileSystemType type,
+                                     FileChangeObserver* observer,
+                                     base::SequencedTaskRunner* task_runner);
+  virtual void AddFileAccessObserver(FileSystemType type,
+                                     FileAccessObserver* observer,
+                                     base::SequencedTaskRunner* task_runner);
+
+  // Returns observer lists for the specified |type| of a file system.
   virtual const UpdateObserverList* GetUpdateObservers(
-      FileSystemType type) const OVERRIDE;
+      FileSystemType type) const;
   virtual const ChangeObserverList* GetChangeObservers(
-      FileSystemType type) const OVERRIDE;
+      FileSystemType type) const;
   virtual const AccessObserverList* GetAccessObservers(
-      FileSystemType type) const OVERRIDE;
+      FileSystemType type) const;
 
   // Registers quota observer for file updates on filesystem of |type|.
   void RegisterQuotaUpdateObserver(FileSystemType type);
 
   void InvalidateUsageCache(const GURL& origin_url,
                             FileSystemType type);
   void StickyInvalidateUsageCache(const GURL& origin_url,
                                   FileSystemType type);
 
   void CollectOpenFileSystemMetrics(base::File::Error error_code);
@@ skipping 74 matching lines @@
   base::Time next_release_time_for_open_filesystem_stat_;
 
   base::WeakPtrFactory<SandboxFileSystemBackendDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxFileSystemBackendDelegate);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_SYSTEM_BACKEND_DELEGATE_H_