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

content/browser/frame_host/navigation_request.cc

Index: content/browser/frame_host/navigation_request.cc
diff --git a/content/browser/frame_host/navigation_request.cc b/content/browser/frame_host/navigation_request.cc
index df0f7a1e7b7128331b36debd5882b31dd4f37bd5..f318e58111fedd156ef29cdabd2a080f7a943479 100644
--- a/content/browser/frame_host/navigation_request.cc
+++ b/content/browser/frame_host/navigation_request.cc
@@ -258,7 +258,8 @@ void NavigationRequest::OnRequestRedirected(
 
 void NavigationRequest::OnResponseStarted(
     const scoped_refptr<ResourceResponse>& response,
-    scoped_ptr<StreamHandle> body) {
+    scoped_ptr<StreamHandle> body,
+    mojo::ScopedDataPipeConsumerHandle data_consumer_handle) {
   DCHECK(state_ == STARTED);
   state_ = RESPONSE_STARTED;
 
@@ -273,7 +274,7 @@ void NavigationRequest::OnResponseStarted(
   }
 
   frame_tree_node_->navigator()->CommitNavigation(
-      frame_tree_node_, response.get(), std::move(body));
+      frame_tree_node_, response.get(), std::move(body), std::move(data_consumer_handle));
 }
 
 void NavigationRequest::OnRequestFailed(bool has_stale_copy_in_cache,