Replace utility classes

This commit replaces utility classes that will no longer be
accessible after VCN moves out of the platform

Bug: 369703242
Test: atest CtsVcnTestCases && atest FrameworksVcnTests
Flag: EXEMPT code refactoring; no functional change
Change-Id: Ia5c987c25728a1ef6ac4aeda02e1c9339c2a3af9
12 files changed