Remove legacy StartsWithASCII function.

components/autofill/core/browser/autofill_download_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/core/browser/autofill_download_manager.h"
 
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
@@ skipping 254 matching lines @@
   const int kHttpServiceUnavailable = 503;
 
   CHECK(it->second.form_signatures.size());
   if (source->GetResponseCode() != kHttpResponseOk) {
     bool back_off = false;
     std::string server_header;
     switch (source->GetResponseCode()) {
       case kHttpBadGateway:
         if (!source->GetResponseHeaders()->EnumerateHeader(NULL, "server",
                                                            &server_header) ||
-            base::StartsWithASCII(server_header.c_str(),
-                                  kAutofillQueryServerNameStartInHeader,
-                                  false) != 0)
+            base::StartsWith(server_header.c_str(),
+                             kAutofillQueryServerNameStartInHeader,
+                             base::CompareCase::INSENSITIVE_ASCII) != 0)
           break;
         // Bad gateway was received from Autofill servers. Fall through to back
         // off.
       case kHttpInternalServerError:
       case kHttpServiceUnavailable:
         back_off = true;
         break;
     }
 
     if (back_off) {
@@ skipping 32 matching lines @@
       }
 
       observer_->OnUploadedPossibleFieldTypes();
     }
   }
   delete it->first;
   url_fetchers_.erase(it);
 }
 
 }  // namespace autofill