Add flag to specify if explicitly requested download is from web.

content/browser/renderer_host/buffered_resource_handler.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/renderer_host/buffered_resource_handler.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 282 matching lines @@
 
     info->set_is_download(true);
 
     scoped_refptr<ResourceHandler> handler(
         host_->CreateResourceHandlerForDownload(
             request_,
             info->GetContext(),
             info->GetChildID(),
             info->GetRouteID(),
             info->GetRequestID(),
+            true,  // is_content_initiated
             DownloadSaveInfo(),
             DownloadResourceHandler::OnStartedCallback()));
 
     if (!UseAlternateResourceHandler(request_id, handler))
       return false;
   }
 
   if (info->pause_count())
     return true;
 
@@ skipping 140 matching lines @@
       ResourceRequestInfoImpl::ForRequest(request_);
   int child_id = info->GetChildID();
   int request_id = info->GetRequestID();
 
   host_->PauseRequest(child_id, request_id, false);
   if (!CompleteResponseStarted(request_id))
     host_->CancelRequest(child_id, request_id, false);
 }
 
 }  // namespace content