Wire UpdateRect signalling in test frame generators
Wire UpdateRect signalling in test frame generators

This is a lightweight signalling, which tells that two
frames are the same if they are the same view of the same frame from the
same file, without comparing actual buffer contents and searching for
changed pixels.

Bug: webrtc:10310
Change-Id: I5c6ae571fdf4cab88466cde88fe7c7a78ae121cc
Reviewed-on: https://webrtc-review.googlesource.com/c/125099
Commit-Queue: Ilya Nikolaevskiy <76788ac3efd229e9d156135d9ceb7fef65c45da4@webrtc.org>
Reviewed-by: Erik Språng <3ab8c90c99d6dd7822e0fad803ab0211dd287ae5@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26951}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc