feat: upgrade to Node 12 (#17838)

* fix: add boringssl backport to support node upgrade

* fix: Update node_includes.h, add DCHECK macros

* fix: Update node Debug Options parser usage

* fix: Fix asar setup

* fix: using v8Util in isolated context

* fix: make "process" available in preload scripts

* fix: use proper options parser and remove setting of _breakFirstLine

_breakFirstLine was being set on the process, but that has changed in node 12 and so is no longer needed. Node will handle it properly when --inspect-brk is provided

* chore: update node dep sha

* fix: process.binding => _linkedBinding in sandboxed isolated preload

* fix: make original-fs work with streams

* build: override node module version

* fix: use _linkedBinding in content_script/init.js

* chore: update node ref in DEPS

* build: node_module_version should be 73

DEPS

@@ -12,7 +12,7 @@ vars = {
   'chromium_version':
     '1e9f9a24aa12bea9cf194a82a7e249bd1242ec4f',
   'node_version':
-    '2dc0f8811b2b295c08d797b8a11b030234c98502',
+    '696d8fb66d6f65fc82869d390e0d2078970b1eb4',
 
   'boto_version': 'f7574aa6cc2c819430c1f05e9a1a1a666ef8169b',
   'pyyaml_version': '3.12',