[WIP] Provided file system from NACL.

chrome/browser/chromeos/file_system_provider/operations/get_metadata.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_OPERATIONS_GET_METADATA_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_GET_METADATA_H_
 
 #include "base/files/file.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/operation.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/request_value.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
 
 namespace base {
 class FilePath;
 }  // namespace base
 
-namespace extensions {
-class EventRouter;
-}  // namespace extensions
 
 namespace chromeos {
 namespace file_system_provider {
 namespace operations {
 
 // Validates the metadata. If it's incorrect (eg. incorrect characters in the
 // name or empty for non-root), then returns false.
 bool ValidateIDLEntryMetadata(
     const extensions::api::file_system_provider::EntryMetadata& metadata,
     bool root_entry);
 
 // Checks whether the passed name is valid or not.
 bool ValidateName(const std::string& name, bool root_entry);
 
 // Bridge between fileapi get metadata operation and providing extension's get
 // metadata request. Created per request.
-class GetMetadata : public Operation {
+template <class DestinationPolicy>
+class GetMetadata : public Operation<DestinationPolicy> {
  public:
-  GetMetadata(extensions::EventRouter* event_router,
+  GetMetadata(typename DestinationPolicy::EventRouterType* event_router,
               const ProvidedFileSystemInfo& file_system_info,
               const base::FilePath& entry_path,
               ProvidedFileSystemInterface::MetadataFieldMask fields,
               const ProvidedFileSystemInterface::GetMetadataCallback& callback);
   ~GetMetadata() override;
 
   // Operation overrides.
   bool Execute(int request_id) override;
   void OnSuccess(int request_id,
                  scoped_ptr<RequestValue> result,
                  bool has_more) override;
   void OnError(int request_id,
                scoped_ptr<RequestValue> result,
                base::File::Error error) override;
 
  private:
   base::FilePath entry_path_;
   ProvidedFileSystemInterface::MetadataFieldMask fields_;
   const ProvidedFileSystemInterface::GetMetadataCallback callback_;
 
-  DISALLOW_COPY_AND_ASSIGN(GetMetadata);
+  DISALLOW_COPY_AND_ASSIGN(GetMetadata<DestinationPolicy>);
 };
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_GET_METADATA_H_