Add utf_string_conversions to base namespace.

chrome/installer/test/alternate_version_generator.cc

Index: chrome/installer/test/alternate_version_generator.cc
diff --git a/chrome/installer/test/alternate_version_generator.cc b/chrome/installer/test/alternate_version_generator.cc
index 9e54561ca96640f37ba28626fbaa13ecbaf58227..02a866fb4fda670a94361fade8b90075d959e571 100644
--- a/chrome/installer/test/alternate_version_generator.cc
+++ b/chrome/installer/test/alternate_version_generator.cc
@@ -669,7 +669,7 @@ bool GenerateAlternatePEFileVersion(const base::FilePath& original_file,
     return false;
   }
 
-  Version new_version(WideToASCII(ctx.new_version_str));
+  Version new_version(base::WideToASCII(ctx.new_version_str));
   GenerateSpecificPEFileVersion(original_file, target_file, new_version);
 
   return true;