Add necessary null pointer check to avoid crash on youtube video

bug:5562347
Change-Id: I9b53a58137d70955bde5334c7c8b581343a8c2ce

diff --git a/Source/WebCore/dom/Document.cpp b/Source/WebCore/dom/Document.cpp
index d85a949..6e21dc3 100644 (file)
--- a/Source/WebCore/dom/Document.cpp
+++ b/Source/WebCore/dom/Document.cpp
@@ -4902,6 +4902,10 @@ void Document::webkitWillEnterFullScreenForElement(Element* element)
         m_fullScreenRenderer->setAnimating(true);
 #if USE(ACCELERATED_COMPOSITING)
         view()->updateCompositingLayers();
+#if PLATFORM(ANDROID)
+        if (!m_fullScreenRenderer->layer())
+            return;
+#endif
         if (m_fullScreenRenderer->layer()->isComposited())
             page()->chrome()->client()->setRootFullScreenLayer(m_fullScreenRenderer->layer()->backing()->graphicsLayer());
 #endif