Move StartsWith[ASCII] to base namespace.

components/autofill/core/browser/autofill_download_manager.cc

Index: components/autofill/core/browser/autofill_download_manager.cc
diff --git a/components/autofill/core/browser/autofill_download_manager.cc b/components/autofill/core/browser/autofill_download_manager.cc
index 877423448b1dccabb272c1d6d78d3d8b6b0bce4d..efcabc734649e72428daecb0ace111d694c8dd0c 100644
--- a/components/autofill/core/browser/autofill_download_manager.cc
+++ b/components/autofill/core/browser/autofill_download_manager.cc
@@ -272,9 +272,9 @@ void AutofillDownloadManager::OnURLFetchComplete(
       case kHttpBadGateway:
         if (!source->GetResponseHeaders()->EnumerateHeader(NULL, "server",
                                                            &server_header) ||
-            StartsWithASCII(server_header.c_str(),
-                            kAutofillQueryServerNameStartInHeader,
-                            false) != 0)
+            base::StartsWithASCII(server_header.c_str(),
+                                  kAutofillQueryServerNameStartInHeader,
+                                  false) != 0)
           break;
         // Bad gateway was received from Autofill servers. Fall through to back
         // off.