PlzNavigate: make NavigationResourceHandler a LayeredResourceHandler

content/browser/loader/resource_dispatcher_host_impl.h

Index: content/browser/loader/resource_dispatcher_host_impl.h
diff --git a/content/browser/loader/resource_dispatcher_host_impl.h b/content/browser/loader/resource_dispatcher_host_impl.h
index 3667199b497b7e8c288405c19fcb97f55c63cd59..2aa2edb6eff0996bc5d46cf232b159499db6a645 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -33,6 +33,7 @@
 #include "content/public/browser/global_request_id.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/resource_request_info.h"
+#include "content/public/browser/stream_handle.h"
 #include "content/public/common/previews_state.h"
 #include "content/public/common/request_context_type.h"
 #include "content/public/common/resource_type.h"
@@ -606,7 +607,9 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
       AppCacheService* appcache_service,
       int child_id,
       int route_id,
-      std::unique_ptr<ResourceHandler> handler);
+      std::unique_ptr<ResourceHandler> handler,
+      NavigationURLLoaderImplCore* loader,
+      std::unique_ptr<StreamHandle> stream_handle);

[mmenke, 2017/04/28 16:02:21]

Can we document these?  While nothing else other than handler is documented,
these two seem the least clear to me.

[clamy, 2017/05/02 15:05:44]

Done.

 
   void OnCancelRequest(ResourceRequesterInfo* requester_info, int request_id);
   void OnReleaseDownloadedFile(ResourceRequesterInfo* requester_info,