base::StartsWithASCII() -> base::StartsWith().

dart_library_provider_network.cc

 // Copyright 2015 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 "tonic/dart_library_provider_network.h"
 
 #include "base/bind.h"
 #include "base/strings/string_util.h"
 #include "tonic/dart_converter.h"
 #include "url/gurl.h"
@@ skipping 63 matching lines @@
 
 void DartLibraryProviderNetwork::GetLibraryAsStream(
     const std::string& name,
     DataPipeConsumerCallback callback) {
   jobs_.insert(std::unique_ptr<Job>(new Job(this, name, callback)));
 }
 
 Dart_Handle DartLibraryProviderNetwork::CanonicalizeURL(Dart_Handle library,
                                                         Dart_Handle url) {
   std::string string = StdStringFromDart(url);
-  if (base::StartsWithASCII(string, "dart:", true))
+  if (base::StartsWith(string, "dart:", base::CompareCase::SENSITIVE))
     return url;
   // TODO(abarth): The package root should be configurable.
-  if (base::StartsWithASCII(string, "package:", true))
+  if (base::StartsWith(string, "package:", base::CompareCase::SENSITIVE))
     base::ReplaceFirstSubstringAfterOffset(&string, 0, "package:",
                                            "/packages/");
   GURL library_url(StdStringFromDart(Dart_LibraryUrl(library)));
   GURL resolved_url = library_url.Resolve(string);
   return StdStringToDart(resolved_url.spec());
 }
 
 }  // namespace tonic