Move temp file functions to base namespace.

chrome/test/remoting/me2me_browsertest.cc

Index: chrome/test/remoting/me2me_browsertest.cc
diff --git a/chrome/test/remoting/me2me_browsertest.cc b/chrome/test/remoting/me2me_browsertest.cc
index 7072cae89611903e819ce504b049c8420c8e3ae9..d5cefe7331e6358c516336716d9da2fba94f6b0a 100644
--- a/chrome/test/remoting/me2me_browsertest.cc
+++ b/chrome/test/remoting/me2me_browsertest.cc
@@ -87,7 +87,7 @@ void Me2MeBrowserTest::TestKeyboardInput() {
   ASSERT_TRUE(TimeoutWaiter(base::TimeDelta::FromMilliseconds(300)).Wait());
 
   base::FilePath temp_file;
-  EXPECT_TRUE(file_util::CreateTemporaryFile(&temp_file));
+  EXPECT_TRUE(base::CreateTemporaryFile(&temp_file));
 
   // Write some text into the temp file.
   std::string text = "Abigail";