Update base::StartsWith calls to new form

chrome/browser/extensions/chrome_url_request_util.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 "chrome/browser/extensions/chrome_url_request_util.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 80 matching lines @@
  private:
   ~URLRequestResourceBundleJob() override {}
 
   void OnMimeTypeRead(std::string* out_mime_type,
                       std::string* charset,
                       scoped_refptr<base::RefCountedMemory> data,
                       std::string* read_mime_type,
                       const net::CompletionCallback& callback,
                       bool read_result) {
     *out_mime_type = *read_mime_type;
-    if (base::StartsWithASCII(*read_mime_type, "text/", false)) {
+    if (base::StartsWith(*read_mime_type, "text/",
+                         base::CompareCase::INSENSITIVE_ASCII)) {
       // All of our HTML files should be UTF-8 and for other resource types
       // (like images), charset doesn't matter.
       DCHECK(base::IsStringUTF8(base::StringPiece(
           reinterpret_cast<const char*>(data->front()), data->size())));
       *charset = "utf-8";
     }
     int result = read_result ? net::OK : net::ERR_INVALID_URL;
     callback.Run(result);
   }
 
@@ skipping 66 matching lines @@
                                              resource_id,
                                              content_security_policy,
                                              send_cors_header);
     }
   }
   return NULL;
 }
 
 }  // namespace chrome_url_request_util
 }  // namespace extensions