Adds some code to help isolate where crash is happening

components/html_viewer/web_url_loader_impl.cc

Index: components/html_viewer/web_url_loader_impl.cc
diff --git a/components/html_viewer/web_url_loader_impl.cc b/components/html_viewer/web_url_loader_impl.cc
index 1d7805af2a3d330c749b3cb5a2a6e7d4e5e266ac..5f5b840c0c416fd984b09f7a436ce9a487653d46 100644
--- a/components/html_viewer/web_url_loader_impl.cc
+++ b/components/html_viewer/web_url_loader_impl.cc
@@ -79,6 +79,7 @@ WebURLLoaderImpl::WebURLLoaderImpl(mojo::URLLoaderFactory* url_loader_factory,
     : client_(NULL),
       web_blob_registry_(web_blob_registry),
       referrer_policy_(blink::WebReferrerPolicyDefault),
+      handle_watcher_(15),
       weak_factory_(this) {
   url_loader_factory->CreateURLLoader(GetProxy(&url_loader_));
 }