[Refactor] to rename and re-layer the file_util stack layers.

webkit/fileapi/file_system_operation_context.cc

Index: webkit/fileapi/file_system_operation_context.cc
diff --git a/webkit/fileapi/file_system_operation_context.cc b/webkit/fileapi/file_system_operation_context.cc
index b8a7c6f8962484ebb46aec93bd0f614e883b767d..5f0abf0e339061c9a398c2bce3446faf94c08cf1 100644
--- a/webkit/fileapi/file_system_operation_context.cc
+++ b/webkit/fileapi/file_system_operation_context.cc
@@ -11,10 +11,10 @@ namespace fileapi {
 
 FileSystemOperationContext::FileSystemOperationContext(
     FileSystemContext* context,
-    FileSystemFileUtil* file_system_file_util)
+    FileSystemFileUtil* file_util)
     : file_system_context_(context),
-      src_file_system_file_util_(file_system_file_util),
-      dest_file_system_file_util_(file_system_file_util),
+      src_file_util_(file_util),
+      dest_file_util_(file_util),
       src_type_(kFileSystemTypeUnknown),
       dest_type_(kFileSystemTypeUnknown),
       allowed_bytes_growth_(0) {
@@ -26,7 +26,7 @@ FileSystemOperationContext::~FileSystemOperationContext() {
 FileSystemOperationContext*
 FileSystemOperationContext::CreateInheritedContextForDest() const {
   FileSystemOperationContext* context = new FileSystemOperationContext(
-      file_system_context_.get(), dest_file_system_file_util_);
+      file_system_context_.get(), dest_file_util_);
   context->set_src_origin_url(dest_origin_url_);
   context->set_src_type(dest_type_);
   context->set_allowed_bytes_growth(allowed_bytes_growth_);