Revert "📺 Use video aspect ratio to determine PiP params."

This reverts commit 164f881f06faea76c87b246e2cdd17ab531416e5.

Reason for revert: Caused a failure https://build.chromium.org/p/chromium/builders/Android/builds/74079

Original change's description:
> 📺 Use video aspect ratio to determine PiP params.
> 
> Use the bounds of the fullscreen video to determine the starting
> bounds for the PiP transformation and the aspect ratio of the PiP
> window.
> 
> Change-Id: Ia2227c9d277b5ae2a1dedddb899082e2947137fe
> Reviewed-on: https://chromium-review.googlesource.com/536974
> Commit-Queue: Peter Conn <[email protected]>
> Reviewed-by: Jochen Eisinger <[email protected]>
> Reviewed-by: Mounir Lamouri <[email protected]>
> Reviewed-by: Bernhard Bauer <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#485916}

[email protected],[email protected],[email protected],[email protected]

Change-Id: I91b3e716c02bd5c41cf93d3fde04e0874d26d3e6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/566865
Reviewed-by: Peter Conn <[email protected]>
Commit-Queue: Peter Conn <[email protected]>
Cr-Commit-Position: refs/heads/master@{#485929}
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index e0b68ae..b85d291 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -5717,12 +5717,9 @@
     observer.MediaResized(size, id);
 }
 
-base::Optional<gfx::Size> WebContentsImpl::GetFullscreenVideoSize() {
-  base::Optional<WebContentsObserver::MediaPlayerId> id =
-      media_web_contents_observer_->GetFullscreenVideoMediaPlayerId();
-  if (id && cached_video_sizes_.count(id.value()))
-    return base::Optional<gfx::Size>(cached_video_sizes_[id.value()]);
-  return base::Optional<gfx::Size>();
+const WebContents::VideoSizeMap&
+WebContentsImpl::GetCurrentlyPlayingVideoSizes() {
+  return cached_video_sizes_;
 }
 
 int WebContentsImpl::GetCurrentlyPlayingVideoCount() {