Remove legacy StartsWithASCII function.

content/browser/fileapi/fileapi_message_filter.cc

 // Copyright (c) 2012 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 "content/browser/fileapi/fileapi_message_filter.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 579 matching lines @@
 
 void FileAPIMessageFilter::OnRevokePublicBlobURL(const GURL& public_url) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   ignore_result(blob_storage_host_->RevokePublicBlobURL(public_url));
 }
 
 void FileAPIMessageFilter::OnStartBuildingStream(
     const GURL& url, const std::string& content_type) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   // Only an internal Blob URL is expected here. See the BlobURL of the Blink.
-  if (!base::StartsWithASCII(url.path(), "blobinternal%3A///",
-                             true /* case_sensitive */)) {
+  if (!base::StartsWith(url.path(), "blobinternal%3A///",
+                        base::CompareCase::SENSITIVE)) {
     NOTREACHED() << "Malformed Stream URL: " << url.spec();
     bad_message::ReceivedBadMessage(this,
                                     bad_message::FAMF_MALFORMED_STREAM_URL);
     return;
   }
   // Use an empty security origin for now. Stream accepts a security origin
   // but how it's handled is not fixed yet.
   new Stream(stream_context_->registry(),
              NULL /* write_observer */,
              url);
@@ skipping 271 matching lines @@
   }
 
   return true;
 }
 
 scoped_refptr<Stream> FileAPIMessageFilter::GetStreamForURL(const GURL& url) {
   return stream_context_->registry()->GetStream(url);
 }
 
 }  // namespace content