Remove legacy StartsWithASCII function.

components/google/core/browser/google_url_tracker.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/google/core/browser/google_url_tracker.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/prefs/pref_service.h"
@@ skipping 79 matching lines @@
   // Don't update the URL if the request didn't succeed.
   if (!source->GetStatus().is_success() || (source->GetResponseCode() != 200)) {
     already_fetched_ = false;
     return;
   }
 
   // See if the response data was valid.  It should be ".google.<TLD>".
   std::string url_str;
   source->GetResponseAsString(&url_str);
   base::TrimWhitespace(url_str, base::TRIM_ALL, &url_str);
-  if (!base::StartsWithASCII(url_str, ".google.", false))
+  if (!base::StartsWith(url_str, ".google.",
+                        base::CompareCase::INSENSITIVE_ASCII))
     return;
   GURL url("https://www" + url_str);
   if (!url.is_valid() || (url.path().length() > 1) || url.has_query() ||
       url.has_ref() ||
       !google_util::IsGoogleDomainUrl(url, google_util::DISALLOW_SUBDOMAIN,
                                       google_util::DISALLOW_NON_STANDARD_PORTS))
     return;
 
   if (url != google_url_) {
     google_url_ = url;
@@ skipping 65 matching lines @@
   // Also retry kMaxRetries times on network change errors. A network change can
   // propagate through Chrome in various stages, so it's possible for this code
   // to be reached via OnNetworkChanged(), and then have the fetch we kick off
   // be canceled due to e.g. the DNS server changing at a later time. In general
   // it's not possible to ensure that by the time we reach here any requests we
   // start won't be canceled in this fashion, so retrying is the best we can do.
   fetcher_->SetAutomaticallyRetryOnNetworkChanges(kMaxRetries);
 
   fetcher_->Start();
 }