cros: Bind hangup red button on remote controller to close web dialog

ui/views/test/widget_test.cc

Index: ui/views/test/widget_test.cc
diff --git a/ui/views/test/widget_test.cc b/ui/views/test/widget_test.cc
index a96a9db970a7e626486ba275afa1d43365fe2a1d..43072b11d2b22692b920b7decc7f2fe2c56846f9 100644
--- a/ui/views/test/widget_test.cc
+++ b/ui/views/test/widget_test.cc
@@ -178,6 +178,8 @@ void WidgetActivationWaiter::OnWidgetActivationChanged(Widget* widget,
 }
 
 WidgetClosingObserver::WidgetClosingObserver(Widget* widget) : widget_(widget) {
+  if (!widget)
+    return;

[xiyuan, 2017/05/12 22:29:57]

DCHECK(widget) or just get rid of it to let it crash.

[Qiang(Joe) Xu, 2017/05/12 22:39:33]

done by removing

   widget_->AddObserver(this);
 }
 
@@ -186,10 +188,17 @@ WidgetClosingObserver::~WidgetClosingObserver() {
     widget_->RemoveObserver(this);
 }
 
+void WidgetClosingObserver::Wait() {
+  if (widget_)
+    run_loop_.Run();
+}
+
 void WidgetClosingObserver::OnWidgetClosing(Widget* widget) {
   DCHECK_EQ(widget_, widget);
   widget_->RemoveObserver(this);
   widget_ = nullptr;
+  if (run_loop_.running())
+    run_loop_.Quit();
 }
 
 }  // namespace test