In order to reduce the startup impact to near zero, we are
creating a whitelist to be checked before parsing rules.

The whitelist will be shared over Global Settings. To generate
it, we will listen for intents at boot (LOCKED_BOOT_COMPLETED)
and when ANGLE itself has been updated (MY_PACKAGE_REPLACED).

The whitelist can also be populated by hand:

  adb shell settings put global angle_whitelist app1,app2,appN

We plan to further mitigate the ANGLE-enabled app impact
by parsing the full rules when creating the whitelist, off of
the critical path.

Bug: angleproject:3086
Test: Internal CTS tests and manual verification
Change-Id: I6263358e2fdbfaa7183d1b941005b5455285cbff
Reviewed-on: https://chromium-review.googlesource.com/c/1415715Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Cody Northrop <cnorthrop@google.com>