Update callers of CreateFileSystemOperation so more detailed error codes can be returned. Where app…

webkit/fileapi/file_system_url_request_job.cc

Index: webkit/fileapi/file_system_url_request_job.cc
diff --git a/webkit/fileapi/file_system_url_request_job.cc b/webkit/fileapi/file_system_url_request_job.cc
index c26a4d7d1691b347cf796df379ab6f4de7751751..959c01b3c892616ea2d4f2ea91557098f500028b 100644
--- a/webkit/fileapi/file_system_url_request_job.cc
+++ b/webkit/fileapi/file_system_url_request_job.cc
@@ -157,11 +157,12 @@ void FileSystemURLRequestJob::StartAsync() {
     return;
   DCHECK(!reader_.get());
   url_ = FileSystemURL(request_->url());
+  base::PlatformFileError error_code;
   FileSystemOperation* operation =
-      file_system_context_->CreateFileSystemOperation(url_);
-  if (!operation) {
+      file_system_context_->CreateFileSystemOperation(url_, &error_code);
+  if (error_code != base::PLATFORM_FILE_OK) {
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED,
-                                net::ERR_INVALID_URL));
+                                net::PlatformFileErrorToNetError(error_code)));
     return;
   }
   operation->GetMetadata(