base: Move CaseInsensitiveCompare traits into the base namespace.

base/string_util.cc

Index: base/string_util.cc
diff --git a/base/string_util.cc b/base/string_util.cc
index b24232952549d1337690cde9716273a8a9724056..fd8438aedc1e1b3fdaae16e7ebf2ca88fd7a457a 100644
--- a/base/string_util.cc
+++ b/base/string_util.cc
@@ -568,7 +568,7 @@ bool StartsWithT(const STR& str, const STR& search, bool case_sensitive) {
     if (search.size() > str.size())
       return false;
     return std::equal(search.begin(), search.end(), str.begin(),
-                      CaseInsensitiveCompare<typename STR::value_type>());
+                      base::CaseInsensitiveCompare<typename STR::value_type>());
   }
 }
 
@@ -595,7 +595,7 @@ bool EndsWithT(const STR& str, const STR& search, bool case_sensitive) {
   } else {
     return std::equal(search.begin(), search.end(),
                       str.begin() + (str_length - search_length),
-                      CaseInsensitiveCompare<typename STR::value_type>());
+                      base::CaseInsensitiveCompare<typename STR::value_type>());
   }
 }