[WIP] Provided file system from NACL.

chrome/browser/chromeos/file_system_provider/operations/write_file.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/write_file.h"
 
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #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 {
 
-WriteFile::WriteFile(extensions::EventRouter* event_router,
-                     const ProvidedFileSystemInfo& file_system_info,
-                     int file_handle,
-                     scoped_refptr<net::IOBuffer> buffer,
-                     int64 offset,
-                     int length,
-                     const storage::AsyncFileUtil::StatusCallback& callback)
-    : Operation(event_router, file_system_info),
+template <class DestinationPolicy>
+WriteFile<DestinationPolicy>::WriteFile(
+    typename DestinationPolicy::EventRouterType* event_router,
+    const ProvidedFileSystemInfo& file_system_info,
+    int file_handle,
+    scoped_refptr<net::IOBuffer> buffer,
+    int64 offset,
+    int length,
+    const storage::AsyncFileUtil::StatusCallback& callback)
+    : Operation<DestinationPolicy>(event_router, file_system_info),
       file_handle_(file_handle),
       buffer_(buffer),
       offset_(offset),
       length_(length),
       callback_(callback) {
 }
 
-WriteFile::~WriteFile() {
+template <class DestinationPolicy>
+WriteFile<DestinationPolicy>::~WriteFile() {
 }
 
-bool WriteFile::Execute(int request_id) {
+template <class DestinationPolicy>
+bool WriteFile<DestinationPolicy>::Execute(int request_id) {
   TRACE_EVENT0("file_system_provider", "WriteFile::Execute");
   using extensions::api::file_system_provider::WriteFileRequestedOptions;
 
-  if (!file_system_info_.writable())
+  if (!this->file_system_info_.writable())
     return false;
 
   WriteFileRequestedOptions 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.open_request_id = file_handle_;
   options.offset = offset_;
   // Length is not passed directly since it can be accessed via data.byteLength.
 
   // Set the data directly on base::Value() to avoid an extra string copy.
   DCHECK(buffer_.get());
   scoped_ptr<base::DictionaryValue> options_as_value = options.ToValue();
   options_as_value->Set(
       "data",
       base::BinaryValue::CreateWithCopiedBuffer(buffer_->data(), length_));
 
   scoped_ptr<base::ListValue> event_args(new base::ListValue);
   event_args->Append(options_as_value.release());
 
-  return SendEvent(
+  return this->SendEvent(
       request_id,
       extensions::api::file_system_provider::OnWriteFileRequested::kEventName,
       event_args.Pass());
 }
 
-void WriteFile::OnSuccess(int /* request_id */,
-                          scoped_ptr<RequestValue> /* result */,
-                          bool /* has_more */) {
+template <class DestinationPolicy>
+void WriteFile<DestinationPolicy>::OnSuccess(int /* request_id */,
+                                  scoped_ptr<RequestValue> /* result */,
+                                  bool /* has_more */) {
   TRACE_EVENT0("file_system_provider", "WriteFile::OnSuccess");
   callback_.Run(base::File::FILE_OK);
 }
 
-void WriteFile::OnError(int /* request_id */,
-                        scoped_ptr<RequestValue> /* result */,
-                        base::File::Error error) {
+template <class DestinationPolicy>
+void WriteFile<DestinationPolicy>::OnError(int /* request_id */,
+                                scoped_ptr<RequestValue> /* result */,
+                                base::File::Error error) {
   TRACE_EVENT0("file_system_provider", "WriteFile::OnError");
   callback_.Run(error);
 }
 
+FOR_EACH_DESTINATION_SPECIALIZE(WriteFile)
+
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos