Revert "get rid of LinearTransform"

This reverts commit bcd592053ae60e569e9b24f3f2d69b218c24d174.

Bug: 36206160
Test:  Fugu compiles, didn't before the revert
Change-Id: Id80fd4ce9db3fce03b049cf81f938187c7ddb8b0
3 files changed