Blink handle selection handle visibility

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index f4ce94d2bd4be5f8189366801b9704f29dc308c9..ccb83023fec826d67fd68f9922a40c92bee38edc 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -775,10 +775,17 @@ DrawResult LayerTreeHostImpl::CalculateRenderPasses(FrameData* frame) {
                             active_tree_->hud_layer()->IsAnimatingHUDContents();
   bool must_always_swap =
       compositor_frame_sink_->capabilities().must_always_swap;
+  // When touch handle visibility changes there is no visible damage
+  // because touch handles are composited in the browser. However we
+  // still want the browser to be notified that the handles changed
+  // through the |ViewHostMsg_SwapCompositorFrame| IPC so we keep
+  // track of handle visibility changes through |handle_visibility_changed|.
+  bool handle_visibility_changed =
+      active_tree_->GetAndResetHandleVisibilityChanged();
   if (root_surface_has_contributing_layers &&
       root_surface_has_no_visible_damage &&
       !active_tree_->property_trees()->effect_tree.HasCopyRequests() &&
-      !must_always_swap && !hud_wants_to_draw_) {
+      !must_always_swap && !hud_wants_to_draw_ && !handle_visibility_changed) {
     TRACE_EVENT0("cc",
                  "LayerTreeHostImpl::CalculateRenderPasses::EmptyDamageRect");
     frame->has_no_damage = true;