Expose FS show/hide thresholds to Command Line

cc/layer_tree_host_impl.cc

Index: cc/layer_tree_host_impl.cc
diff --git a/cc/layer_tree_host_impl.cc b/cc/layer_tree_host_impl.cc
index cb4a872916cd6695eebd83cfc6d7581af2d60a5d..005f22b94adabd72ff56a3ea3015f3b69ed5177b 100644
--- a/cc/layer_tree_host_impl.cc
+++ b/cc/layer_tree_host_impl.cc
@@ -174,8 +174,12 @@ LayerTreeHostImpl::LayerTreeHostImpl(const LayerTreeSettings& settings, LayerTre
 
     setDebugState(settings.initialDebugState);
 
-    if (settings.calculateTopControlsPosition)
-        m_topControlsManager = TopControlsManager::Create(this, settings.topControlsHeight);
+    if (settings.calculateTopControlsPosition) {
+        m_topControlsManager = TopControlsManager::Create(this,
+                                                          settings.topControlsHeight,
+                                                          settings.topControlsShowThreshold,
+                                                          settings.topControlsHideThreshold);
+    }
 
     setDebugState(settings.initialDebugState);