[WIP] Provided file system from NACL.

chrome/browser/chromeos/file_system_provider/operations/truncate.cc

 // 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.
 
 #include "chrome/browser/chromeos/file_system_provider/operations/truncate.h"
 
 #include <string>
 
 #include "chrome/common/extensions/api/file_system_provider.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
 
 namespace chromeos {
 namespace file_system_provider {
 namespace operations {
 
-Truncate::Truncate(extensions::EventRouter* event_router,
-                   const ProvidedFileSystemInfo& file_system_info,
-                   const base::FilePath& file_path,
-                   int64 length,
-                   const storage::AsyncFileUtil::StatusCallback& callback)
-    : Operation(event_router, file_system_info),
+template <class DestinationPolicy>
+Truncate<DestinationPolicy>::Truncate(
+    typename DestinationPolicy::EventRouterType* event_router,
+    const ProvidedFileSystemInfo& file_system_info,
+    const base::FilePath& file_path,
+    int64 length,
+    const storage::AsyncFileUtil::StatusCallback& callback)
+    : Operation<DestinationPolicy>(event_router, file_system_info),
       file_path_(file_path),
       length_(length),
       callback_(callback) {
 }
 
-Truncate::~Truncate() {
+template <class DestinationPolicy>
+Truncate<DestinationPolicy>::~Truncate() {
 }
 
-bool Truncate::Execute(int request_id) {
+template <class DestinationPolicy>
+bool Truncate<DestinationPolicy>::Execute(int request_id) {
   using extensions::api::file_system_provider::TruncateRequestedOptions;
 
-  if (!file_system_info_.writable())
+  if (!this->file_system_info_.writable())
     return false;
 
   TruncateRequestedOptions options;
-  options.file_system_id = file_system_info_.file_system_id();
+  options.file_system_id = this->file_system_info_.file_system_id();
   options.request_id = request_id;
   options.file_path = file_path_.AsUTF8Unsafe();
   options.length = length_;
 
-  return SendEvent(
+  return this->SendEvent(
       request_id,
       extensions::api::file_system_provider::OnTruncateRequested::kEventName,
       extensions::api::file_system_provider::OnTruncateRequested::Create(
           options));
 }
 
-void Truncate::OnSuccess(int /* request_id */,
-                         scoped_ptr<RequestValue> /* result */,
-                         bool has_more) {
+template <class DestinationPolicy>
+void Truncate<DestinationPolicy>::OnSuccess(int /* request_id */,
+                                 scoped_ptr<RequestValue> /* result */,
+                                 bool has_more) {
   callback_.Run(base::File::FILE_OK);
 }
 
-void Truncate::OnError(int /* request_id */,
-                       scoped_ptr<RequestValue> /* result */,
-                       base::File::Error error) {
+template <class DestinationPolicy>
+void Truncate<DestinationPolicy>::OnError(int /* request_id */,
+                               scoped_ptr<RequestValue> /* result */,
+                               base::File::Error error) {
   callback_.Run(error);
 }
 
+FOR_EACH_DESTINATION_SPECIALIZE(Truncate)
+
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos