chore: fix patch linter (#21495)

patches/node/build_add_gn_build_files.patch

@@ -3,6 +3,7 @@ From: Jeremy Apthorp <nornagon@nornagon.net>
 Date: Tue, 26 Feb 2019 17:07:45 -0800
 Subject: build: add GN build files
 
+This adds GN build files for Node, so we don't have to build with GYP.
 
 diff --git a/BUILD.gn b/BUILD.gn
 new file mode 100644

patches/node/chore_handle_default_configuration_not_being_set_in_the_electron_env.patch

@@ -3,6 +3,10 @@ From: Samuel Attard <sattard@slack-corp.com>
 Date: Tue, 23 Jul 2019 11:36:48 -0700
 Subject: chore: handle default_configuration not being set in the electron env
 
+We don't set the `default_configuration` key in our config.gypi, this allows
+the tests to run in spite of that.
+
+TODO(marshallofsound/nornagon): Just add this key to config.gypi.
 
 diff --git a/test/common/index.js b/test/common/index.js
 index 00ebd283a0c3e960de2a7c4e3748561c499eb820..2ebec24f9e1f53306882e827a17925201cad0ea6 100644

patches/node/feat_add_new_built_with_electron_variable_to_config_gypi.patch

@@ -3,6 +3,8 @@ From: Shelley Vohr <shelley.vohr@gmail.com>
 Date: Tue, 2 Oct 2018 11:39:58 -0700
 Subject: feat: add new built_with_electron variable to config.gypi
 
+This allows 3rd-party native modules to know whether they're being built
+against Electron.
 
 diff --git a/tools/generate_config_gypi.py b/tools/generate_config_gypi.py
 index 01f62d4ae6e3b9d539444e3dff069f0011353caa..d8b279f590c115108d5dca879747de7b0c9f1934 100644

patches/node/fix_call_initializecontextruntime_in_initializecontext.patch

@@ -3,6 +3,14 @@ From: Shelley Vohr <shelley.vohr@gmail.com>
 Date: Tue, 22 Oct 2019 11:00:01 -0700
 Subject: fix: call InitializeContextRuntime in InitializeContext
 
+Since https://github.com/nodejs/node/commit/1ec4154e507ba71d7aefca0a6e5c155be34e989a,
+we observed a crash in renderer process initialization becuase we don't
+directly call NewContext, and so InitializeContext would not create primordials
+correctly and the following error would occur:
+
+node::Environment::CreateProperties(): Assertion `primordials->IsObject()' failed.
+
+This fixes that. See https://github.com/electron/electron/pull/20684.
 
 diff --git a/src/api/environment.cc b/src/api/environment.cc
 index 50886f4a998f1e7f346a6b7fad91ce49c3a7cdff..6ec07527ad7a806f889d884507e9def1cf68b4c8 100644

patches/node/fix_export_debugoptions.patch

@@ -3,6 +3,7 @@ From: Nitish Sakhawalkar <nitsakh@icloud.com>
 Date: Thu, 11 Apr 2019 11:50:49 -0700
 Subject: fix: export DebugOptions
 
+This exports DebugOptions so we can parse args like `--inspect-brk`.
 
 diff --git a/src/node_options.cc b/src/node_options.cc
 index d53ab2a4bfe87321e899b431eac262223e532335..c0c15a88c028d9c70081aa75fabf63d1d78014e6 100644

patches/node/fixme_comment_trace_event_macro.patch

@@ -3,6 +3,8 @@ From: Nitish Sakhawalkar <nitsakh@icloud.com>
 Date: Tue, 26 Mar 2019 11:28:05 -0700
 Subject: fixme: Comment trace event macro
 
+This broke the build at some point. Does it still? We should probably remove
+this patch and find out!
 
 diff --git a/src/node_internals.h b/src/node_internals.h
 index fb1188a6bbce37b2bbaba0a815f2826dca60cf3b..843cbf1d253022c9601ceaf74022873a48ac0a5f 100644

patches/node/fixme_remove_async_id_assertion_check.patch

@@ -3,6 +3,8 @@ From: Shelley Vohr <shelley.vohr@gmail.com>
 Date: Thu, 13 Sep 2018 09:08:10 -0700
 Subject: FIXME: remove async_id assertion check
 
+async hooks are hella broken in Electron. This was checking that they weren't,
+but they are, so we just disabled the check. YOLO.
 
 diff --git a/src/api/callback.cc b/src/api/callback.cc
 index e6098d5921a038063bf8255f8af6f000becf76a0..3c518870c9c8d92f3dfcd6c270f5e023e3b69633 100644

patches/node/refactor_allow_embedder_overriding_of_internal_fs_calls.patch

@@ -3,6 +3,8 @@ From: Samuel Attard <sattard@slack-corp.com>
 Date: Mon, 22 Apr 2019 13:23:37 -0700
 Subject: refactor: allow embedder overriding of internal FS calls
 
+We use this to allow node's 'fs' module to read from ASAR files as if they were
+a real filesystem.
 
 diff --git a/lib/internal/bootstrap/node.js b/lib/internal/bootstrap/node.js
 index 18acd9d2b64774efdb9261e69923a5ba320a7f0e..0f36697ce5ed0b5bb6df74ceca219574da7eea53 100644