[fsp] Add support for creating files.

chrome/browser/chromeos/file_system_provider/provided_file_system.cc

Index: chrome/browser/chromeos/file_system_provider/provided_file_system.cc
diff --git a/chrome/browser/chromeos/file_system_provider/provided_file_system.cc b/chrome/browser/chromeos/file_system_provider/provided_file_system.cc
index 567a73a91b22fcc11f0e5d3fb8be3ecc69cdd3c5..3e12114f5b9858ad01b52d5f5ff3310fa95b6673 100644
--- a/chrome/browser/chromeos/file_system_provider/provided_file_system.cc
+++ b/chrome/browser/chromeos/file_system_provider/provided_file_system.cc
@@ -9,6 +9,7 @@
 #include "chrome/browser/chromeos/file_system_provider/notification_manager.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/close_file.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/create_directory.h"
+#include "chrome/browser/chromeos/file_system_provider/operations/create_file.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/delete_entry.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/get_metadata.h"
 #include "chrome/browser/chromeos/file_system_provider/operations/open_file.h"
@@ -166,6 +167,18 @@ void ProvidedFileSystem::DeleteEntry(
   }
 }
 
+void ProvidedFileSystem::CreateFile(
+    const base::FilePath& file_path,
+    const fileapi::AsyncFileUtil::StatusCallback& callback) {
+  if (!request_manager_.CreateRequest(
+          CREATE_FILE,
+          scoped_ptr<RequestManager::HandlerInterface>(
+              new operations::CreateFile(
+                  event_router_, file_system_info_, file_path, callback)))) {
+    callback.Run(base::File::FILE_ERROR_SECURITY);
+  }
+}
+
 const ProvidedFileSystemInfo& ProvidedFileSystem::GetFileSystemInfo() const {
   return file_system_info_;
 }