PROTOTYPE: PlzNavigate: use a Mojo data pipe to stream navigation data to the renderer.

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index b2a1e051ae98f8b344aef0a5cf4b4723bdc13a8b..eabf1d01f87319cbd71ffe385fbf51d91ee357d0 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -1379,8 +1379,11 @@ void ResourceDispatcherHostImpl::BeginRequest(
   bool is_navigation_stream_request =
       IsBrowserSideNavigationEnabled() &&
       IsResourceTypeFrame(request_data.resource_type);
+  // TODO(carlosk): We have to work something out later to confirm this request
+  // is indeed for a navigation streaming through Mojo.
   if (is_navigation_stream_request &&
-      !request_data.resource_body_stream_url.SchemeIs(url::kBlobScheme)) {
+      (!request_data.resource_body_stream_url.SchemeIs(url::kBlobScheme) ||
+       request_data.resource_body_stream_url.is_empty())) {
     bad_message::ReceivedBadMessage(filter_, bad_message::RDH_INVALID_URL);
     return;
   }
@@ -1711,7 +1714,9 @@ scoped_ptr<ResourceHandler> ResourceDispatcherHostImpl::AddStandardHandlers(
   // initial request.
   if (IsBrowserSideNavigationEnabled() && IsResourceTypeFrame(resource_type) &&
       child_id != -1) {
-    DCHECK(request->url().SchemeIs(url::kBlobScheme));
+    // TODO(carlosk): We have to work something out later to confirm this
+    // request is indeed for a navigation streaming through Mojo.
+    // DCHECK(request->url().SchemeIs(url::kBlobScheme));
     return handler;
   }