Settings to remap Backspace and Escape keys

chrome/browser/chromeos/events/event_rewriter.h

Index: chrome/browser/chromeos/events/event_rewriter.h
diff --git a/chrome/browser/chromeos/events/event_rewriter.h b/chrome/browser/chromeos/events/event_rewriter.h
index 7acaff568b033f4ea2d5e3eb0ab5a4f2d8357d2e..6701b0b38fad18f46de5a8bda8e48a58bc5aaf62 100644
--- a/chrome/browser/chromeos/events/event_rewriter.h
+++ b/chrome/browser/chromeos/events/event_rewriter.h
@@ -34,8 +34,8 @@ class ImeKeyboard;
 
 // EventRewriter makes various changes to keyboard-related events,
 // including KeyEvents and some other events with keyboard modifier flags:
-// - maps modifiers keys (Control, Alt, Search, Caps, Diamond) according
-//   to user preferences;
+// - maps modifiers keys (Control, Alt, Search, Caps Lock, Escape, Backspace
+//   Diamond) according to user preferences;

[stevenjb, 2016/08/17 22:35:30]

Are Esc/Backspace considered 'modifier keys'? The others don't typically do
things on their own (with the exception of caps lock/search, but that's kind of
a funky exception for chrome os).

[michaelpg, 2016/08/17 23:00:58]

Technically, no. (Caps Lock is normally also not considered a modifier.) But
they're mappable to modifier keys, and in this particular implementation, make
the most sense to handle in the same place as modifier keys.

[stevenjb, 2016/08/17 23:04:08]

OK, thanks for clarifying the comment.

 // - maps Command to Control on Apple keyboards;
 // - converts numeric pad editing keys to their numeric forms;
 // - converts top-row function keys to special keys where necessary;