skip rectangular focus ring check in browser if no picture
diff --git a/WebKit/android/nav/CachedRoot.cpp b/WebKit/android/nav/CachedRoot.cpp
index 41f642c..cf8578f 100644
--- a/WebKit/android/nav/CachedRoot.cpp
+++ b/WebKit/android/nav/CachedRoot.cpp
@@ -626,6 +626,8 @@
 bool CachedRoot::checkRings(const WTF::Vector<WebCore::IntRect>& rings,
         const WebCore::IntRect& bounds) const
 {
+    if (!mPicture)
+        return false;
     RingCheck ringCheck(rings, bounds.location());
     BoundsCanvas checker(&ringCheck);
     SkBitmap bitmap;