Convert string16 -> base::string16 in components/

components/autofill/browser/phone_field.cc

Index: components/autofill/browser/phone_field.cc
diff --git a/components/autofill/browser/phone_field.cc b/components/autofill/browser/phone_field.cc
index e7415bad90273f103dbaa88ea82f93ce3f477745..e3b5a6010115fc716a03137e0534c4ebae4011c4 100644
--- a/components/autofill/browser/phone_field.cc
+++ b/components/autofill/browser/phone_field.cc
@@ -17,8 +17,8 @@
 namespace {
 
 // This string includes all area code separators, including NoText.
-string16 GetAreaRegex() {
-  string16 area_code = UTF8ToUTF16(autofill::kAreaCodeRe);
+base::string16 GetAreaRegex() {
+  base::string16 area_code = UTF8ToUTF16(autofill::kAreaCodeRe);
   area_code.append(ASCIIToUTF16("|"));  // Regexp separator.
   area_code.append(UTF8ToUTF16(autofill::kAreaCodeNotextRe));
   return area_code;
@@ -245,7 +245,7 @@ PhoneField::PhoneField() {
 }
 
 // static
-string16 PhoneField::GetRegExp(RegexType regex_id) {
+base::string16 PhoneField::GetRegExp(RegexType regex_id) {
   switch (regex_id) {
     case REGEX_COUNTRY:
       return UTF8ToUTF16(autofill::kCountryCodeRe);
@@ -269,5 +269,5 @@ string16 PhoneField::GetRegExp(RegexType regex_id) {
       NOTREACHED();
       break;
   }
-  return string16();
+  return base::string16();
 }