Devtools[LayoutEditor]: Pass data about property change from InspectorOverlayPage

Source/core/inspector/InspectorOverlayHost.cpp

Index: Source/core/inspector/InspectorOverlayHost.cpp
diff --git a/Source/core/inspector/InspectorOverlayHost.cpp b/Source/core/inspector/InspectorOverlayHost.cpp
index a32923c1ff51ca61f9689d3530cb9ff08455d103..4f7e15a8983afc599e0068649e9cff30a9e2894a 100644
--- a/Source/core/inspector/InspectorOverlayHost.cpp
+++ b/Source/core/inspector/InspectorOverlayHost.cpp
@@ -53,9 +53,28 @@ void InspectorOverlayHost::stepOver()
         m_listener->overlaySteppedOver();
 }
 
+void InspectorOverlayHost::startPropertyChange(const String& anchorName)
+{
+    if (m_layoutEditorListener)
+        m_layoutEditorListener->overlayStartedPropertyChange(anchorName);
+}
+
+void InspectorOverlayHost::changeProperty(float delta)
+{
+    if (m_layoutEditorListener)
+        m_layoutEditorListener->overlayPropertyChanged(delta);
+}
+
+void InspectorOverlayHost::endPropertyChange()
+{
+    if (m_layoutEditorListener)
+        m_layoutEditorListener->overlayEndedPropertyChange();
+}
+
 DEFINE_TRACE(InspectorOverlayHost)
 {
     visitor->trace(m_listener);
+    visitor->trace(m_layoutEditorListener);
 }
 
 } // namespace blink