Move temp file functions to base namespace.

remoting/host/config_file_watcher_unittest.cc

Index: remoting/host/config_file_watcher_unittest.cc
diff --git a/remoting/host/config_file_watcher_unittest.cc b/remoting/host/config_file_watcher_unittest.cc
index 1d349a378b5b30d0b3a62fbe613f87e4257b777c..2eaffd6d5390805c4027d7519ad2273f11cf7f20 100644
--- a/remoting/host/config_file_watcher_unittest.cc
+++ b/remoting/host/config_file_watcher_unittest.cc
@@ -94,7 +94,7 @@ void ConfigFileWatcherTest::TearDown() {
 
 // Verifies that the initial notification is delivered.
 TEST_F(ConfigFileWatcherTest, Basic) {
-  EXPECT_TRUE(file_util::CreateTemporaryFile(&config_file_));
+  EXPECT_TRUE(base::CreateTemporaryFile(&config_file_));
 
   std::string data("test");
   EXPECT_NE(file_util::WriteFile(config_file_, data.c_str(),
@@ -116,7 +116,7 @@ MATCHER_P(EqualsString, s, "") {
 
 // Verifies that an update notification is sent when the file is changed.
 TEST_F(ConfigFileWatcherTest, Update) {
-  EXPECT_TRUE(file_util::CreateTemporaryFile(&config_file_));
+  EXPECT_TRUE(base::CreateTemporaryFile(&config_file_));
 
   EXPECT_CALL(delegate_, OnConfigUpdated(EqualsString("test")))
       .Times(1)