This reverts commit 37c40014.

Reason for revert: Need to clear the package cache when bisecting.

Original change's description:
> Revert "Vulkan: Fold deferred clears into current clears"
>
> This reverts commit e416c92a.
>
> Reason for revert: Reverted parent:
> https://chromium-review.googlesource.com/c/angle/angle/+/2481612
>
> Original change's description:
> > Vulkan: Fold deferred clears into current clears
> >
> > If there are clears prior to a glClear() call, those clears were
> > flushed (starting a new render pass) and then the clear call's clears
> > would be applied (essentially modifying the loadOps of said render
> > pass).
> >
> > The main downside of the above is that the current glClear() clears
> > don't get a chance to be deferred.  This was observed in Chrome which
> > clears an attachment with an emulated format, then switches
> > framebuffers.
> >
> > Additionally, if the render pass had already been started, the deferred
> > clears could have become inlined instead of breaking the render pass.
> > Although, it's unlikely for there to be deferred clears when the render
> > pass is already open.
> >
> > This change first identifies which clears need to go through the draw
> > path (scissored, masked or as workaround for driver bug).  It merges the
> > rest of the clears (that don't need the draw path) with the deferred
> > clears.  It then checks deferred clears and applies them by either:
> >
> > - vkCmdClearAttachments if mid RP
> > - Start a new render pass and use loadOps, if any draw-based clear needs
> >   to follow.
> > - Modify current RP loadOps / defer the clear
> >
> > Afterwards, the draw-based clears are applied.
> >
> > Bug: angleproject:4836
> > Change-Id: Id4992c78983b199734508c9d4bb18ed3195c91ec
> > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2455167
> > Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
> > Reviewed-by: Jamie Madill <jmadill@chromium.org>
> > Reviewed-by: Charlie Lao <cclao@google.com>
>
> TBR=syoussefi@chromium.org,jmadill@chromium.org,cclao@google.com
>
> Change-Id: I85733b3594409df9b96e3d5b34933522c97c42cf
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: angleproject:4836
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2481613
> Reviewed-by: Tim Van Patten <timvp@google.com>
> Commit-Queue: Tim Van Patten <timvp@google.com>

TBR=timvp@google.com,syoussefi@chromium.org,jmadill@chromium.org,cclao@google.com

# Not skipping CQ checks because this is a reland.

Bug: angleproject:4836
Change-Id: I702cd510f39ee46feab27d4efbf61ae5da10d4e2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2481856Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Tim Van Patten <timvp@google.com>