cc: Glue LTHI and Scheduler changes for checker-imaging.

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 bd9d482bb35860193c42bfca21f95f75922bd88a..b7a3e1a4b3bca60c9d328c7a53863d9c9de0720c 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -1215,6 +1215,11 @@ void LayerTreeHostImpl::BlockNotifyReadyToActivateForTesting(bool block) {
   NOTREACHED();
 }
 
+void LayerTreeHostImpl::BlockImplSideInvalidationRequestsForTesting(
+    bool block) {
+  NOTREACHED();
+}
+
 void LayerTreeHostImpl::ResetTreesForTesting() {
   if (active_tree_)
     active_tree_->DetachLayers();