Revert "Avoid checking overlay ResourcePool in non CA Layer"

This reverts commit afd24343.

Reason for revert: Caused a memory regression on Mac, for some reason: https://bugs.chromium.org/p/chromium/issues/detail?id=771766

Original change's description:
> Avoid checking overlay ResourcePool in non CA Layer
> 
> Overlay ResourcePool is only used for CA layer.
> BUG=None
> 
> Change-Id: Id37572e65d1b7a2c3307fa80be9820a94d693f7a
> Reviewed-on: https://chromium-review.googlesource.com/685947
> Reviewed-by: Antoine Labour <piman@chromium.org>
> Commit-Queue: Xing Xu <xing.xu@intel.com>
> Cr-Commit-Position: refs/heads/master@{#505913}

TBR=xing.xu@intel.com,piman@chromium.org,danakj@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: None
Change-Id: I0543fa78a715438d9d27c9eb38f643008745679f
Reviewed-on: https://chromium-review.googlesource.com/703714Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506907}

components/viz/service/display/gl_renderer.cc

@@ -3375,7 +3375,12 @@ void GLRenderer::ScheduleCALayers() {
 }
 
 void GLRenderer::ScheduleDCLayers() {
+  if (overlay_resource_pool_) {
+    overlay_resource_pool_->CheckBusyResources();
+  }
+
   scoped_refptr<DCLayerOverlaySharedState> shared_state;
+  size_t copied_render_pass_count = 0;
   for (DCLayerOverlay& dc_layer_overlay :
        current_frame()->dc_layer_overlay_list) {
     DCHECK(!dc_layer_overlay.rpdq);
@@ -3430,6 +3435,13 @@ void GLRenderer::ScheduleDCLayers() {
                                  dc_layer_overlay.edge_aa_mask, bounds_rect,
                                  filter);
   }
+
+  // Take the number of copied render passes in this frame, and use 3 times that
+  // amount as the cache limit.
+  if (overlay_resource_pool_) {
+    overlay_resource_pool_->SetResourceUsageLimits(
+        std::numeric_limits<std::size_t>::max(), copied_render_pass_count * 5);
+  }
 }
 
 void GLRenderer::ScheduleOverlays() {