tree bf735850a06b18fcb1beb5ac79ddf9675cf6f1f7
parent c6bddb82617437c7f9fd8e21e6a60816f8b14d06
author Doris Ling <dling@google.com> 1465493702 -0700
committer Doris Ling <dling@google.com> 1465590462 -0700

Added config system navigation keys.

1. Added config_supportSystemNavigationKeys to config and symbols
2. Added SYSTEM_NAVIGATION_KEYS_ENABLED to Settings.Global
3. Updated PhoneWindowManager to check for the system navigation keys enabled
   flag before expanding or collapsing the notification panel.

Bug 29120082

Change-Id: Ia73078520474ce5a1cbf2256c0d793ed74bbf589