Add new metrics event constant for Settings->Help & Feedback, and log it
whenever user selects the help option menu, passing the context extra for
the corresponding settings preference where the help menu is launched.
Change-Id: I971e8e50b959a5451ed085e5da5fd8504111e6c3
Fixes: 30140281
Adds colors_device_defaults.xml and defines the primary, primary dark, accent,
and secondary colors for the dark, light, and settings themes.
Also creates primary and primary dark values for the Material.Settings theme
and updates the themes to use those values.
Finally, fixes HelpUtils to properly get the value of colorAccent. Previously,
if colorAccent were defined to a hex value directly, it would crash.
BUG: 28625050
BUG: 29003416
Change-Id: Ia73b7368014c57c1676904d494cbb5169c8a836b
Moved HelpUtils to SettingsLib from com.android.settings so it can be
shared with packageinstaller.
Bug: b/22096093
Change-Id: I75efb6476a8c7621279705a636f87b32d8d921be
