Move StartsWith[ASCII] to base namespace.

components/suggestions/suggestions_service.cc

Index: components/suggestions/suggestions_service.cc
diff --git a/components/suggestions/suggestions_service.cc b/components/suggestions/suggestions_service.cc
index dde38a1ff6fe316d22a42a8ac50132f9fa9ff194..f8f139885745ee3ff88bcab769bf984f45cdfaba 100644
--- a/components/suggestions/suggestions_service.cc
+++ b/components/suggestions/suggestions_service.cc
@@ -178,9 +178,8 @@ void SuggestionsService::UndoBlacklistURL(
 // static
 bool SuggestionsService::GetBlacklistedUrl(const net::URLFetcher& request,
                                            GURL* url) {
-  bool is_blacklist_request = StartsWithASCII(request.GetOriginalURL().spec(),
-                                              kSuggestionsBlacklistURLPrefix,
-                                              true);
+  bool is_blacklist_request = base::StartsWithASCII(
+      request.GetOriginalURL().spec(), kSuggestionsBlacklistURLPrefix, true);
   if (!is_blacklist_request) return false;
 
   // Extract the blacklisted URL from the blacklist request.