[Chromoting] Remove Application.Mode

Application.Mode was effectively a global variable that kept track of
which app was running (DesktopRemoting vs. AppRemoting) and which
mode (It2ME or Me2Me).

This cl removes Application.Mode and moves the Mode tracking into
the DesktopRemoting app. There are only a few remaining places in
the code that care about the It2Me vs Me2Me distinction (testing,
menu enabling, logging, ...).

Requires that crrev.com/1095203010 land first.

BUG=

Review URL: https://codereview.chromium.org/1105853004

Cr-Commit-Position: refs/heads/master@{#328179}

0 files changed, 0 insertions, 0 deletions