Clean up GPU back-pressure with remote CALayers

content/browser/compositor/browser_compositor_ca_layer_tree_mac.h

Index: content/browser/compositor/browser_compositor_ca_layer_tree_mac.h
diff --git a/content/browser/compositor/browser_compositor_ca_layer_tree_mac.h b/content/browser/compositor/browser_compositor_ca_layer_tree_mac.h
index 71787c67b705406d50a9ac2015ef0ff171545d3b..4092370f702d0a0e2fdb242f41e530da743a3f2d 100644
--- a/content/browser/compositor/browser_compositor_ca_layer_tree_mac.h
+++ b/content/browser/compositor/browser_compositor_ca_layer_tree_mac.h
@@ -37,6 +37,9 @@ class BrowserCompositorCALayerTreeMac
   // Return the CGL renderer ID for the surface, if one is available.
   int GetRendererID() const;
 
+  // Return true if the renderer should not be throttled by GPU back-pressure.
+  bool IsRendererThrottlingDisabled() const;
+
   // Mark a bracket in which new frames are being pumped in a restricted nested
   // run loop.
   void BeginPumpingFrames();