[fsp] Extract ObservedEntry and ObservedEntries to a separate file.

chrome/browser/chromeos/file_system_provider/service.h

 // Copyright 2014 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 CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <utility>
@@ skipping 120 matching lines @@
 
   // ProvidedFileSystemInterface::Observer overrides.
   virtual void OnObservedEntryChanged(
       const ProvidedFileSystemInfo& file_system_info,
       const base::FilePath& observed_path,
       ProvidedFileSystemObserver::ChangeType change_type,
       const ProvidedFileSystemObserver::ChildChanges& child_changes,
       const base::Closure& callback) override;
   virtual void OnObservedEntryTagUpdated(
       const ProvidedFileSystemInfo& file_system_info,
-      const base::FilePath& observed_path) override;
+      const base::FilePath& observed_path,
+      const std::string& tag) override;
   virtual void OnObservedEntryListChanged(
-      const ProvidedFileSystemInfo& file_system_info) override;
+      const ProvidedFileSystemInfo& file_system_info,
+      const ObservedEntries& observed_entries) override;
 
  private:
   // Key is a pair of an extension id and file system id, which makes it
   // unique among the entire service instance.
   typedef std::pair<std::string, std::string> FileSystemKey;
 
   typedef std::map<FileSystemKey, ProvidedFileSystemInterface*>
       ProvidedFileSystemMap;
   typedef std::map<std::string, FileSystemKey> MountPointNameToKeyMap;
 
@@ skipping 24 matching lines @@
   base::ThreadChecker thread_checker_;
   base::WeakPtrFactory<Service> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Service);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_