Update to latest libchromiumcontent and node.

diff --git a/vendor/brightray b/vendor/brightray
index 7bbe019..d8e9643 160000 (submodule)
--- a/vendor/brightray
+++ b/vendor/brightray
@@ -1 +1 @@
-Subproject commit 7bbe0199d58862f03dd9415ee639005e135a4c0f
+Subproject commit d8e9643b2d719c1eb4e3087ec1cf4136241973fb

diff --git a/vendor/node b/vendor/node
index e797d99..6f537dd 160000 (submodule)
--- a/vendor/node
+++ b/vendor/node
@@ -1 +1 @@
-Subproject commit e797d990daefb643ce299e85f2c6e4caca38b520
+Subproject commit 6f537ddaf67d4916be895a63ee488ea4b047c80c