Update layout before creating AXObjectCache in AccessibilityInspectorAgent

third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp

Index: third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp b/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
index a9759da14b1410109c3599728823b736c99955ce..c1762d60d37ab82fa0aad7b88924a6452b53e707 100644
--- a/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
@@ -381,6 +381,8 @@ void InspectorAccessibilityAgent::getAXNode(ErrorString* errorString, int nodeId
         return;
 
     Document& document = node->document();
+    document.updateStyleAndLayoutIgnorePendingStylesheets();
+    DocumentLifecycle::DisallowTransitionScope disallowTransition(document.lifecycle());
     std::unique_ptr<ScopedAXObjectCache> cache = ScopedAXObjectCache::create(document);
     AXObjectCacheImpl* cacheImpl = toAXObjectCacheImpl(cache->get());
     AXObject* axObject = cacheImpl->getOrCreate(node);