Reorder methods and members of HdrMetadata
Reorder methods and members of HdrMetadata

Bug: webrtc:8651
Change-Id: I67941a5918d5cd31a7b04b11aa20c500d49e9a62
Reviewed-on: https://webrtc-review.googlesource.com/c/114283
Reviewed-by: Niels Moller <0057859e47d61d90529d0f66d9ef692cefedb46a@webrtc.org>
Commit-Queue: Johannes Kron <1b08081ed40e645cb73c476abf12190bd8e64c57@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26002}
TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc