All previous initialize methods are deprecated and a new initialize that uses a builder pattern is added. This gives us full control over the order of initialization. Bug: webrtc:7474 Change-Id: I006190e50f2e75c5015f0be75b86d367676db2cc Reviewed-on: https://webrtc-review.googlesource.com/4160 Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Commit-Queue: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20037}