Replace string16 with base::string16.

chrome/browser/autocomplete/url_prefix.cc

Index: chrome/browser/autocomplete/url_prefix.cc
diff --git a/chrome/browser/autocomplete/url_prefix.cc b/chrome/browser/autocomplete/url_prefix.cc
index 9174bd561cee68f36409dc57d428bd88cb42e9cb..d48ee35dc6b9e0d3bf583c1974b7179396b6f335 100644
--- a/chrome/browser/autocomplete/url_prefix.cc
+++ b/chrome/browser/autocomplete/url_prefix.cc
@@ -8,7 +8,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 
-URLPrefix::URLPrefix(const string16& prefix, size_t num_components)
+URLPrefix::URLPrefix(const base::string16& prefix, size_t num_components)
     : prefix(prefix),
       num_components(num_components) {
 }
@@ -30,7 +30,7 @@ const URLPrefixes& URLPrefix::GetURLPrefixes() {
 }
 
 // static
-bool URLPrefix::IsURLPrefix(const string16& prefix) {
+bool URLPrefix::IsURLPrefix(const base::string16& prefix) {
   const URLPrefixes& list = GetURLPrefixes();
   for (URLPrefixes::const_iterator i = list.begin(); i != list.end(); ++i)
     if (i->prefix == prefix)
@@ -39,8 +39,8 @@ bool URLPrefix::IsURLPrefix(const string16& prefix) {
 }
 
 // static
-const URLPrefix* URLPrefix::BestURLPrefix(const string16& text,
-                                          const string16& prefix_suffix) {
+const URLPrefix* URLPrefix::BestURLPrefix(const base::string16& text,
+                                          const base::string16& prefix_suffix) {
   const URLPrefixes& list = GetURLPrefixes();
   for (URLPrefixes::const_iterator i = list.begin(); i != list.end(); ++i)
     if (StartsWith(text, i->prefix + prefix_suffix, false))