Fix MimeHandlerView plugin loading for data: URLs

content/child/web_url_loader_impl.cc

Index: content/child/web_url_loader_impl.cc
diff --git a/content/child/web_url_loader_impl.cc b/content/child/web_url_loader_impl.cc
index c3431b5649d5b4c78ccd81b817636e861b7b3d6d..a1a5beb4b281d6f4a625d33b26f497db68b30b81 100644
--- a/content/child/web_url_loader_impl.cc
+++ b/content/child/web_url_loader_impl.cc
@@ -778,6 +778,11 @@ bool WebURLLoaderImpl::Context::CanHandleDataURLRequestLocally() const {
   if (request_.downloadToFile())
     return false;
 
+  // Data url requests from object tags may need to be intercepted as streams
+  // and so need to be sent to the browser.
+  if (request_.requestContext() == WebURLRequest::RequestContextObject)
+    return false;
+
   // Optimize for the case where we can handle a data URL locally.  We must
   // skip this for data URLs targetted at frames since those could trigger a
   // download.