Bug 1097441 - Initialize mSize on BufferTextureHost. r=nical
Bug 1097441 - Use SetScaleToSize for scaling videos so that it works for asynchronous size changes. r=roc
Bug 1098022 - Use Maybe<T> for mLastEndTimestamp in TrackBuffer to differentiate between 0 and unset. r=ajones
Bug 1098674 - Ignore unknown track header flag that appears in some MSE videos. r=ajones