Correctly update the bounds of objects in the accessibility tree.

content/test/accessibility_browser_test_utils.cc

Index: content/test/accessibility_browser_test_utils.cc
diff --git a/content/test/accessibility_browser_test_utils.cc b/content/test/accessibility_browser_test_utils.cc
index e91b2cf23987049983a4b10c74d2ac47ef17e215..ae514aec4af7ebb37fc4bfd07c70ce2763a0ea7a 100644
--- a/content/test/accessibility_browser_test_utils.cc
+++ b/content/test/accessibility_browser_test_utils.cc
@@ -58,6 +58,10 @@ AccessibilityNotificationWaiter::~AccessibilityNotificationWaiter() {
 
 void AccessibilityNotificationWaiter::WaitForNotification() {
   loop_runner_->Run();
+
+  // Each loop runner can only be called once. Create a new one in case
+  // the caller wants to call this again to wait for the next notification.
+  loop_runner_ = new MessageLoopRunner();
 }
 
 const ui::AXTree& AccessibilityNotificationWaiter::GetAXTree() const {
@@ -66,7 +70,7 @@ const ui::AXTree& AccessibilityNotificationWaiter::GetAXTree() const {
 
 void AccessibilityNotificationWaiter::OnAccessibilityEvent(
     ui::AXEvent event_type, int event_target_id) {
-  if (!IsAboutBlank() && (event_to_wait_for_ == ui::AX_EVENT_NONE ||
+   if (!IsAboutBlank() && (event_to_wait_for_ == ui::AX_EVENT_NONE ||
                           event_to_wait_for_ == event_type)) {
     event_target_id_ = event_target_id;
     loop_runner_->Quit();