Make ServiceWorkerFetchRequest and ServiceWorkerResponse header maps case insensitive

content/browser/service_worker/service_worker_url_request_job.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 "content/browser/service_worker/service_worker_url_request_job.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
@@ skipping 396 matching lines @@
   CreateResponseHeader(
       response.status_code, response.status_text, response.headers);
   load_timing_info_.receive_headers_end = base::TimeTicks::Now();
   if (!blob_request_)
     CommitResponseHeader();
 }
 
 void ServiceWorkerURLRequestJob::CreateResponseHeader(
     int status_code,
     const std::string& status_text,
-    const std::map<std::string, std::string>& headers) {
+    const ServiceWorkerHeaderMap& headers) {
   // TODO(kinuko): If the response has an identifier to on-disk cache entry,
   // pull response header from the disk.
   std::string status_line(
       base::StringPrintf("HTTP/1.1 %d %s", status_code, status_text.c_str()));
   status_line.push_back('\0');
   http_response_headers_ = new net::HttpResponseHeaders(status_line);
-  for (std::map<std::string, std::string>::const_iterator it = headers.begin();
+  for (ServiceWorkerHeaderMap::const_iterator it = headers.begin();
        it != headers.end();
        ++it) {
     std::string header;
     header.reserve(it->first.size() + 2 + it->second.size());
     header.append(it->first);
     header.append(": ");
     header.append(it->second);
     http_response_headers_->AddHeader(header);
   }
 }
 
 void ServiceWorkerURLRequestJob::CommitResponseHeader() {
   http_response_info_.reset(new net::HttpResponseInfo());
   http_response_info_->headers.swap(http_response_headers_);
   NotifyHeadersComplete();
 }
 
 void ServiceWorkerURLRequestJob::DeliverErrorResponse() {
   // TODO(falken): Print an error to the console of the ServiceWorker and of
   // the requesting page.
-  CreateResponseHeader(500,
-                       "Service Worker Response Error",
-                       std::map<std::string, std::string>());
+  CreateResponseHeader(
+      500, "Service Worker Response Error", ServiceWorkerHeaderMap());
   CommitResponseHeader();
 }
 
 }  // namespace content