update Frame
Producer-facing: replace the current frame.
TODO(Phase 0): wire this to the ToolbarPipeline stages so that customer transforms registered via the public API run at the right moment (loophole P1-11).
Producer-facing: replace the current frame.
TODO(Phase 0): wire this to the ToolbarPipeline stages so that customer transforms registered via the public API run at the right moment (loophole P1-11).