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

webkit/fileapi/file_system_context.cc

Index: webkit/fileapi/file_system_context.cc
diff --git a/webkit/fileapi/file_system_context.cc b/webkit/fileapi/file_system_context.cc
index b28d893caa20578446e59f846eb48bb6ae5c40bb..b8c2afeb911f843ddb1a40b9bf3c1a62c83cb600 100644
--- a/webkit/fileapi/file_system_context.cc
+++ b/webkit/fileapi/file_system_context.cc
@@ -183,13 +183,22 @@ void FileSystemContext::DeleteFileSystem(
 }
 
 FileSystemOperation* FileSystemContext::CreateFileSystemOperation(
-    const FileSystemURL& url) {
-  if (!url.is_valid())
+    const FileSystemURL& url, PlatformFileError* error_code) {
+  if (!url.is_valid()) {
+    if (error_code)
+      *error_code = base::PLATFORM_FILE_ERROR_INVALID_URL;
     return NULL;
+  }
   FileSystemMountPointProvider* mount_point_provider =
       GetMountPointProvider(url.type());
-  if (!mount_point_provider)
+  if (!mount_point_provider) {
+    if (error_code)
+      *error_code = base::PLATFORM_FILE_ERROR_FAILED;
     return NULL;
+  }
+
+  if (error_code)
+    *error_code = base::PLATFORM_FILE_OK;
   return mount_point_provider->CreateFileSystemOperation(url, this);
 }