Don't use web intents for rss feeds.

content/browser/renderer_host/buffered_resource_handler.cc

Index: content/browser/renderer_host/buffered_resource_handler.cc
diff --git a/content/browser/renderer_host/buffered_resource_handler.cc b/content/browser/renderer_host/buffered_resource_handler.cc
index 98aae337af7b65d0d39e39a20b08640225dd6d3d..816413a659e164b3c19ab9ee24644df099aa58e9 100644
--- a/content/browser/renderer_host/buffered_resource_handler.cc
+++ b/content/browser/renderer_host/buffered_resource_handler.cc
@@ -132,6 +132,12 @@ bool BufferedResourceHandler::OnResponseStarted(
       // 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;