Add first-class support for user scripts

chrome/browser/renderer_host/buffered_resource_handler.cc

 // Copyright (c) 2009 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/renderer_host/buffered_resource_handler.h"
 
 #include <vector>
 
 #include "base/histogram.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/renderer_host/download_throttling_resource_handler.h"
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 #include "chrome/browser/renderer_host/resource_dispatcher_host_request_info.h"
 #include "chrome/browser/renderer_host/x509_user_cert_resource_handler.h"
+#include "chrome/common/extensions/user_script.h"
 #include "chrome/common/url_constants.h"
 #include "net/base/io_buffer.h"
 #include "net/base/mime_sniffer.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_response_headers.h"
 #include "webkit/glue/plugins/plugin_list.h"
 
 namespace {
 
@@ skipping 413 matching lines @@
     if (disposition.compare(0, 4, "name") == 0)
       should_download = false;
 
     // We have a content-disposition of "attachment" or unknown.
     // RFC 2183, section 2.8 says that an unknown disposition
     // value should be treated as "attachment".
     if (should_download)
       return true;
   }
 
+  // Special-case user scripts to get downloaded instead of viewed.
+  if (UserScript::HasUserScriptFileExtension(request_->url()))
+    return true;
+
   // MIME type checking.
   if (net::IsSupportedMimeType(type))
     return false;
 
   if (need_plugin_list) {
     if (!NPAPI::PluginList::Singleton()->PluginsLoaded()) {
       *need_plugin_list = true;
       return true;
     }
   } else {
@@ skipping 23 matching lines @@
   if (handler->request_) {
     ResourceDispatcherHostRequestInfo* info =
         ResourceDispatcherHost::InfoForRequest(handler->request_);
     handler->host_->PauseRequest(info->child_id(), info->request_id(), false);
     if (!handler->CompleteResponseStarted(info->request_id(), false))
       handler->host_->CancelRequest(
           info->child_id(), info->request_id(), false);
   }
   handler->Release();
 }