Push updates to inspector when windows are added, destroyed or reorganized

ash/common/devtools/ash_devtools_unittest.cc

Index: ash/common/devtools/ash_devtools_unittest.cc
diff --git a/ash/common/devtools/ash_devtools_unittest.cc b/ash/common/devtools/ash_devtools_unittest.cc
index 35e3ccf99693b63e48640c1990af9ba19c85bcb0..744f4e4822f0a085156d190ce0b854e01981646a 100644
--- a/ash/common/devtools/ash_devtools_unittest.cc
+++ b/ash/common/devtools/ash_devtools_unittest.cc
@@ -141,6 +141,8 @@ TEST_F(AshDevToolsTest, GetDocumentWithWindowWidgetView) {
   Compare(
       child_view,
       widget_node->getChildren(nullptr)->get(0)->getChildren(nullptr)->get(1));
+  // TODO(mhashmi): Remove this call and mock FrontendChannel
+  dom_agent()->disable(nullptr);
 }
 
 }  // namespace ash