[fsp] Add support for observing entries and notifying about changes.

chrome/browser/chromeos/file_system_provider/operations/observe_directory.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/create_directory.h"
+#include "chrome/browser/chromeos/file_system_provider/operations/observe_directory.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 {
 
-CreateDirectory::CreateDirectory(
+ObserveDirectory::ObserveDirectory(
     extensions::EventRouter* event_router,
     const ProvidedFileSystemInfo& file_system_info,
     const base::FilePath& directory_path,
     bool recursive,
     const storage::AsyncFileUtil::StatusCallback& callback)
     : Operation(event_router, file_system_info),
       directory_path_(directory_path),
       recursive_(recursive),
       callback_(callback) {
 }
 
-CreateDirectory::~CreateDirectory() {
+ObserveDirectory::~ObserveDirectory() {
 }
 
-bool CreateDirectory::Execute(int request_id) {
-  using extensions::api::file_system_provider::CreateDirectoryRequestedOptions;
+bool ObserveDirectory::Execute(int request_id) {
+  using extensions::api::file_system_provider::ObserveDirectoryRequestedOptions;
 
-  if (!file_system_info_.writable())
-    return false;
-
-  CreateDirectoryRequestedOptions options;
+  ObserveDirectoryRequestedOptions options;
   options.file_system_id = file_system_info_.file_system_id();
   options.request_id = request_id;
   options.directory_path = directory_path_.AsUTF8Unsafe();
   options.recursive = recursive_;
 
-  return SendEvent(
-      request_id,
-      extensions::api::file_system_provider::OnCreateDirectoryRequested::
-          kEventName,
-      extensions::api::file_system_provider::OnCreateDirectoryRequested::Create(
-          options));
+  return SendEvent(request_id,
+                   extensions::api::file_system_provider::
+                       OnObserveDirectoryRequested::kEventName,
+                   extensions::api::file_system_provider::
+                       OnObserveDirectoryRequested::Create(options));
 }
 
-void CreateDirectory::OnSuccess(int /* request_id */,
-                                scoped_ptr<RequestValue> /* result */,
-                                bool has_more) {
+void ObserveDirectory::OnSuccess(int /* request_id */,
+                                 scoped_ptr<RequestValue> /* result */,
+                                 bool has_more) {
   callback_.Run(base::File::FILE_OK);
 }
 
-void CreateDirectory::OnError(int /* request_id */,
-                              scoped_ptr<RequestValue> /* result */,
-                              base::File::Error error) {
+void ObserveDirectory::OnError(int /* request_id */,
+                               scoped_ptr<RequestValue> /* result */,
+                               base::File::Error error) {
   callback_.Run(error);
 }
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos