Modify data_reduction_proxy_header to support tamper detection logic.

chrome/browser/android/intercept_download_resource_throttle.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/android/intercept_download_resource_throttle.h"
 
 #include "components/data_reduction_proxy/common/data_reduction_proxy_headers.h"
 #include "content/public/browser/android/download_controller_android.h"
 #include "content/public/browser/resource_controller.h"
 #include "net/http/http_request_headers.h"
@@ skipping 44 matching lines @@
 
   // In general, if the request uses HTTP authorization, either with the origin
   // or a proxy, then the network stack should handle the download. The one
   // exception is a request that is fetched via the Chrome Proxy and does not
   // authenticate with the origin.
   if (request_->response_info().did_use_http_auth) {
 #if defined(SPDY_PROXY_AUTH_ORIGIN)
     if (headers.HasHeader(net::HttpRequestHeaders::kAuthorization) ||
         !(request_->response_info().headers &&
             data_reduction_proxy::HasDataReductionProxyViaHeader(
-                request_->response_info().headers))) {
+                request_->response_info().headers, NULL))) {
       return;
     }
 #else
     return;
 #endif
   }
 
   // For OMA DRM downloads, Android Download Manager doesn't handle them
   // correctly. Use chromium network stack instead. http://crbug.com/382698.
   std::string mime;
   request_->GetMimeType(&mime);
   if (!mime.compare(kOmaDrmContentMime) || !mime.compare(kOmaDrmMessageMime))
     return;
 
   content::DownloadControllerAndroid::Get()->CreateGETDownload(
       render_process_id_, render_view_id_, request_id_);
   controller()->Cancel();
 }
 
 }  // namespace chrome