Removes MessageLoop::TYPE_XXX where possible

base/files/file_util_proxy_unittest.cc

Index: base/files/file_util_proxy_unittest.cc
diff --git a/base/files/file_util_proxy_unittest.cc b/base/files/file_util_proxy_unittest.cc
index 762d92b0122c64a5ad415cd0899af0eb2890b353..d01d56db824ac02b7197e03170fcf6af45d325c8 100644
--- a/base/files/file_util_proxy_unittest.cc
+++ b/base/files/file_util_proxy_unittest.cc
@@ -21,8 +21,7 @@ namespace base {
 class FileUtilProxyTest : public testing::Test {
  public:
   FileUtilProxyTest()
-      : message_loop_(MessageLoop::TYPE_IO),
-        file_thread_("FileUtilProxyTestFileThread"),
+      : file_thread_("FileUtilProxyTestFileThread"),
         error_(PLATFORM_FILE_OK),
         created_(false),
         file_(kInvalidPlatformFileValue),
@@ -103,7 +102,7 @@ class FileUtilProxyTest : public testing::Test {
   const FilePath& test_dir_path() const { return dir_.path(); }
   const FilePath test_path() const { return dir_.path().AppendASCII("test"); }
 
-  MessageLoop message_loop_;
+  MessageLoopForIO message_loop_;
   Thread file_thread_;
 
   ScopedTempDir dir_;