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 <ssilkin@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21651}

TBR=brandtr@webrtc.org,asapersson@webrtc.org,ssilkin@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 <ssilkin@webrtc.org>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21655}
diff --git a/modules/video_coding/codecs/vp9/vp9_impl.cc b/modules/video_coding/codecs/vp9/vp9_impl.cc
index 6a62cd2..22993eb 100644
--- a/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -716,8 +716,8 @@
     encoded_image_.content_type_ = (codec_.mode == kScreensharing)
                                        ? VideoContentType::SCREENSHARE
                                        : VideoContentType::UNSPECIFIED;
-    encoded_image_._encodedHeight = pkt->data.frame.height;
-    encoded_image_._encodedWidth = pkt->data.frame.width;
+    encoded_image_._encodedHeight = raw_->d_h;
+    encoded_image_._encodedWidth = raw_->d_w;
     encoded_image_.timing_.flags = TimingFrameFlags::kInvalid;
     int qp = -1;
     vpx_codec_control(encoder_, VP8E_GET_LAST_QUANTIZER, &qp);