Revert "Disable all compositor recycling"

This reverts commit a8bfbc28.

Reason for revert: 70.0.3500.0 still exhibits these crashes

Original change's description:
> Disable all compositor recycling
> 
> Previous patch to disable compositor recycling only disabled for
> BridgedNativeWidget. Now disable for everything.
> 
> TBR=ericrk
> 
> Bug: 863817863817863817863817
> Change-Id: I09fed3b84e7df23d540c4a4db528f43efa8bac15
> Reviewed-on: https://chromium-review.googlesource.com/1146325
> Reviewed-by: ccameron <ccameron@chromium.org>
> Commit-Queue: ccameron <ccameron@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#577095}

TBR=ccameron@chromium.org,ericrk@chromium.org

Change-Id: I3672137e22f8e654192a1bcbace908b0367e7248
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 863817863817863817863817
Reviewed-on: https://chromium-review.googlesource.com/1146960Reviewed-by: ccameron <ccameron@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577183}

ui/compositor/recyclable_compositor_mac.cc

@@ -123,10 +123,6 @@ RecyclableCompositorMacFactory::CreateCompositor(
 
 void RecyclableCompositorMacFactory::RecycleCompositor(
     std::unique_ptr<RecyclableCompositorMac> compositor) {
-  // Disable all recycling to see if it fixes https://crbug.com/863817
-  // TODO(ccameron): Remove this.
-  return;
-
   if (recycling_disabled_)
     return;