Update from https://crrev.com/306724

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index de91b764e864398d881a0a6d409fc3b40c737579..0ad4c6f7b65ad85b4f957f1ab5816da8f59b26b3 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -66,6 +66,7 @@ class UIResourceRequest;
 struct PendingPageScaleAnimation;
 struct RenderingStats;
 struct ScrollAndScaleSet;
+enum class GpuRasterizationStatus;
 
 // Provides information on an Impl's rendering capabilities back to the
 // LayerTreeHost.
@@ -208,6 +209,7 @@ class CC_EXPORT LayerTreeHost {
   }
   void SetHasGpuRasterizationTrigger(bool has_trigger);
   bool UseGpuRasterization() const;
+  GpuRasterizationStatus GetGpuRasterizationStatus() const;
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
   void SetTopControlsLayoutHeight(float height);