Revert "Set encodedWidth/encodedHeight to actual coded resolution."
Revert "Set encodedWidth/encodedHeight to actual coded resolution."

This reverts commit 16beea7c90e161ce82764bf046d588e87d38191f.

Reason for revert: breaks internal tests.

Original change's description:
> Set encodedWidth/encodedHeight to actual coded resolution.
> 
> This fixes mismatch between resolution of coded frame indicated by VP9
> encoder wrapper and actual coded resolution. If internal resize is
> enabled VP9 encoder might downscale input frame when bitrate is too low
> to keep good spatial quality. Before this fix VP9 wrapper always set
> coded resolution equal to input resolution. Now it sets it to actual
> coded resolution which it reads from frame pkt.
> 
> Bug: webrtc:5749
> Change-Id: I7dc8ba89947e99213a3b4c3cd4d974b662f090c4
> Reviewed-on: https://webrtc-review.googlesource.com/39661
> Reviewed-by: Åsa Persson <asapersson@webrtc.org>
> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
> Commit-Queue: Sergey Silkin <fc631354f276613a5410ea259cf4618b2846d39b@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21651}

TBR=brandtr@webrtc.org,asapersson@webrtc.org,fc631354f276613a5410ea259cf4618b2846d39b@webrtc.org

Change-Id: I32cb1271c863cf435f3fc3b465e11232cbd6a888
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:5749
Reviewed-on: https://webrtc-review.googlesource.com/40161
Reviewed-by: Sergey Silkin <fc631354f276613a5410ea259cf4618b2846d39b@webrtc.org>
Commit-Queue: Sergey Silkin <fc631354f276613a5410ea259cf4618b2846d39b@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#21655}
TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc