cc: Initialize wait_for_beginframe_interval in tests.

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index 6313eef056bba41f7e604fc2bbfd9037dfbc03eb..54c1e3d0e7469a2f1caab79a74cac99027a3a992 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -1900,6 +1900,7 @@ class LayerTreeHostTestAbortedCommitDoesntStallDisabledVsync
     : public LayerTreeHostTestAbortedCommitDoesntStall {
   void InitializeSettings(LayerTreeSettings* settings) override {
     LayerTreeHostTestAbortedCommitDoesntStall::InitializeSettings(settings);
+    settings->wait_for_beginframe_interval = false;
     settings->renderer_settings.disable_display_vsync = true;
   }
 };