Update uses of UTF conversions in chrome_frame/, chromeos/, components/ to use the base:: namespace.

chrome_frame/test/policy_settings_unittest.cc

Index: chrome_frame/test/policy_settings_unittest.cc
diff --git a/chrome_frame/test/policy_settings_unittest.cc b/chrome_frame/test/policy_settings_unittest.cc
index 0872b83830bd53c2adc37351a2817648cce0d078..408f6241ca3885b1284d94fc15faada165f15769 100644
--- a/chrome_frame/test/policy_settings_unittest.cc
+++ b/chrome_frame/test/policy_settings_unittest.cc
@@ -15,6 +15,7 @@
 #include "policy/policy_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using base::ASCIIToWide;
 using base::win::RegKey;
 using chrome_frame_test::ScopedVirtualizeHklmAndHkcu;