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

components/autofill/core/browser/autofill_field.cc

Index: components/autofill/core/browser/autofill_field.cc
diff --git a/components/autofill/core/browser/autofill_field.cc b/components/autofill/core/browser/autofill_field.cc
index 4323e8fca96941e8af768e73fb526c2b0c789e31..1a1ba6a64e81e7781481e982304869d586269acc 100644
--- a/components/autofill/core/browser/autofill_field.cc
+++ b/components/autofill/core/browser/autofill_field.cc
@@ -17,6 +17,7 @@
 #include "grit/component_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
+using base::ASCIIToUTF16;
 using base::StringToInt;
 
 namespace autofill {
@@ -378,7 +379,7 @@ bool AutofillField::IsEmpty() const {
 }
 
 std::string AutofillField::FieldSignature() const {
-  std::string field_name = UTF16ToUTF8(name);
+  std::string field_name = base::UTF16ToUTF8(name);
   std::string field_string = field_name + "&" + form_control_type;
   return Hash32Bit(field_string);
 }