Remove LayerTreeHostImpl::DrawViewportSize().

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 9546d4c399026fc58a1816f2fc18a5833e1e8167..c6cc6e0b594799de204d1065626494673cb87d86 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -333,13 +333,6 @@ class CC_EXPORT LayerTreeHostImpl
 
   DrawMode GetDrawMode() const;
 
-  // Viewport size in draw space: this size is in physical pixels and is used
-  // for draw properties, tilings, quads and render passes.
-  gfx::Size DrawViewportSize() const;
-
-  // Viewport rect in view space used for tiling prioritization.
-  const gfx::Rect ViewportRectForTilePriority() const;
-
   // TileManagerClient implementation.
   void NotifyReadyToActivate() override;
   void NotifyReadyToDraw() override;
@@ -542,9 +535,13 @@ class CC_EXPORT LayerTreeHostImpl
   void ScheduleMicroBenchmark(std::unique_ptr<MicroBenchmarkImpl> benchmark);
 
   CompositorFrameMetadata MakeCompositorFrameMetadata() const;
+
   // Viewport rectangle and clip in device space.  These rects are used to
   // prioritize raster and determine what is submitted in a CompositorFrame.
   gfx::Rect DeviceViewport() const;
+  // Viewport rect to be used for tiling prioritization instead of the
+  // DeviceViewport().
+  const gfx::Rect ViewportRectForTilePriority() const;
 
   // When a SwapPromiseMonitor is created on the impl thread, it calls
   // InsertSwapPromiseMonitor() to register itself with LayerTreeHostImpl.