RSS feeds with application/rss+xml or application/atom+xml should be rendered with XMLTreeViewer

content/browser/loader/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/loader/buffered_resource_handler.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 115 matching lines @@
       state_ = STATE_BUFFERING;
       return true;
     }
 
     if (response_->head.mime_type.empty()) {
       // Ugg.  The server told us not to sniff the content but didn't give us
       // a mime type.  What's a browser to do?  Turns out, we're supposed to
       // treat the response as "text/plain".  This is the most secure option.
       response_->head.mime_type.assign("text/plain");
     }
-
-    // Treat feed types as text/plain.
-    if (response_->head.mime_type == "application/rss+xml" ||
-        response_->head.mime_type == "application/atom+xml") {
-      response_->head.mime_type.assign("text/plain");
-    }
   }
 
   state_ = STATE_PROCESSING;
   return ProcessResponse(defer);
 }
 
 // We'll let the original event handler provide a buffer, and reuse it for
 // subsequent reads until we're done buffering.
 bool BufferedResourceHandler::OnWillRead(int request_id, net::IOBuffer** buf,
                                          int* buf_size, int min_size) {
@@ skipping 312 matching lines @@
     const std::vector<WebPluginInfo>& plugins) {
   bool defer = false;
   if (!ProcessResponse(&defer)) {
     controller()->Cancel();
   } else if (!defer) {
     controller()->Resume();
   }
 }
 
 }  // namespace content