Bug 911046 - Part 1: Support external codec in VideoConduit.
Bug 911046 - Part 2: Support 'handle-using' video frames for WebRTC on B2G.
Bug 911046 - Part 3: Add support to WebRTC in OMXCodecWrapper.
Part 4: Add external H.264 HW video codec implementation for B2G.
Bug 911046 - Part 5: Register H.264 external codec for B2G.
Bug 911046 - Part 6: Make H.264 preferred video codec when enabled in preferences.
Bug 911046 - Enable H.264 video in preferences.
[Debug] timing code.