hterm 1.33: Fix user-css merge lossage.

* A previous merge lost the user-css pref changes to hterm_terminal.js.

Change-Id: I79693dddb4ea9960ddf223f4f456a16173ad2d0b
Reviewed-on: https://chromium-review.googlesource.com/190068
Reviewed-by: Marvelous Marius <mschilder@chromium.org>
Commit-Queue: Marvelous Marius <mschilder@chromium.org>
Reviewed-by: Robert Ginda <rginda@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>
hterm 1.34: Add ctrl-plus-minus-zero-zoom preference.

* In the default state (true) hterm works the same as before.  If set to
  false, ctrl-shift-plus/minus/zero controls zoom, and ctrl-minus sends ^_.

Change-Id: Ie35eee99173e8ba003e23008038689936c62d524
Reviewed-on: https://chromium-review.googlesource.com/190069
Reviewed-by: Marvelous Marius <mschilder@chromium.org>
Commit-Queue: Marvelous Marius <mschilder@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>
lib_wam: Remove isFinalReply from the message

lib_wam_message.js:
* Remove the isFinalReply property from the message sent over
  the wire.  Instead messages named 'ok' and 'error' always
  imply isFinalReply.

lib_wam_direct_transport.js:
* Check the queue length before firing the servicePromise_,
  otherwise we end up servicing the queue too many times.

Change-Id: Iaae2ead093facc01d9a1dbfb11c04d810a636ccb
Reviewed-on: https://chromium-review.googlesource.com/190090
Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>
Reviewed-by: Robert Ginda <rginda@chromium.org>