XML Support for non system font providers

The certs needed to identify non preinstalled providers
can now be declared in XML, using a resources array.

Test: runtest --path frameworks/base/core/tests/coretests/src/android/provider/FontsContractTest.java
runtest --path frameworks/base/core/tests/coretests/src/android/content/res/FontResourcesParserTest.java
Bug: 35025705
Change-Id: Ibf12ad409aa5a873ddb32b1383c147728e664c23
13 files changed