Pass http response headers to the streamsPrivate API callback

chrome/browser/extensions/api/streams_private/streams_private_api.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 "chrome/browser/extensions/api/streams_private/streams_private_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 37 matching lines @@
   streams_private::StreamInfo info;
   info.mime_type = stream->GetMimeType();
   info.original_url = stream->GetOriginalURL().spec();
   info.stream_url = stream->GetURL().spec();
   info.tab_id = ExtensionTabUtil::GetTabId(web_contents);
 
   int size = -1;
   if (expected_content_size <= INT_MAX)
     size = expected_content_size;
   info.expected_content_size = size;
+  info.response_headers = stream->GetResponseHeaders();
 
   scoped_ptr<Event> event(
       new Event(streams_private::OnExecuteMimeTypeHandler::kEventName,
                 streams_private::OnExecuteMimeTypeHandler::Create(info)));
 
   ExtensionSystem::Get(profile_)->event_router()->DispatchEventToExtension(
       extension_id, event.Pass());
 
   GURL url = stream->GetURL();
   streams_[extension_id][url] = make_linked_ptr(stream.release());
@@ skipping 11 matching lines @@
 void StreamsPrivateAPI::Observe(int type,
                                 const content::NotificationSource& source,
                                 const content::NotificationDetails& details) {
   if (type == chrome::NOTIFICATION_EXTENSION_UNLOADED) {
     const Extension* extension =
         content::Details<const UnloadedExtensionInfo>(details)->extension;
     streams_.erase(extension->id());
   }
 }
 }  // namespace extensions