1d3c7e0b16
This change moves the definition of the UMA MetricsObserverInterface from api/peerconnectioninterface.h into api/umametrics.h. This allows us to remove the unwanted dependency on peerconnectioninterface.h from files in webrtc/p2p. This is a simple refactoring with no functional changes. BUG=None Review-Url: https://codereview.webrtc.org/2627093005 Cr-Commit-Position: refs/heads/master@{#16020}