Add an experimental flag to enable the Skyframe-based loading phase runner.

Refactor the CommandEnvironment to no longer create a LoadingPhaseRunner
eagerly. Unfortunately, that means we can't reuse the TargetPatternEvaluator
either. Fortunately, the SkyframeTargetPatternEvaluator is a very lightweight
class, which only contains the offset as state, so we just create a new
instance whenever we need one.

On the plus side, the LoadingPhaseRunner API is now stateless, and the
QueryCommand no longer creates a unnecessary LoadingPhaseRunner instance.

--
MOS_MIGRATED_REVID=114519731

0 files changed, 0 insertions, 0 deletions