Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

chrome/browser/extensions/api/web_request/web_request_api_helpers.cc

Index: chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
diff --git a/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc b/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
index df425e665e16675d72c2a7d8fa32da39240b83b4..aaae3f5478a2b2cd50f50ba8a41e0123f1b11334 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_api_helpers.cc
@@ -347,7 +347,7 @@ EventResponseDelta* CalculateOnHeadersReceivedDelta(
       bool header_found = false;
       for (ResponseHeaders::const_iterator i = new_response_headers->begin();
            i != new_response_headers->end(); ++i) {
-        if (LowerCaseEqualsASCII(i->first, name_lowercase.c_str()) &&
+        if (base::LowerCaseEqualsASCII(i->first, name_lowercase.c_str()) &&
             value == i->second) {
           header_found = true;
           break;