Reenable framebusting

third_party/WebKit/Source/core/frame/Frame.cpp

Index: third_party/WebKit/Source/core/frame/Frame.cpp
diff --git a/third_party/WebKit/Source/core/frame/Frame.cpp b/third_party/WebKit/Source/core/frame/Frame.cpp
index 6f7a7402da5898e23d8477e1302556579c2b8883..c4691bde5b97d126b4bf924e0552ad3c85840e61 100644
--- a/third_party/WebKit/Source/core/frame/Frame.cpp
+++ b/third_party/WebKit/Source/core/frame/Frame.cpp
@@ -167,8 +167,7 @@ bool Frame::canNavigate(const Frame& targetFrame) {
       canNavigateWithoutFramebusting(targetFrame, errorReason);
   const bool sandboxed = securityContext()->getSandboxFlags() != SandboxNone;
   const bool hasUserGesture =
-      isLocalFrame() ? toLocalFrame(this)->document()->hasReceivedUserGesture()
-                     : false;
+      isLocalFrame() ? toLocalFrame(this)->hasReceivedUserGesture() : false;
 
   // Top navigation in sandbox with or w/o 'allow-top-navigation'.
   if (targetFrame != this && sandboxed && targetFrame == tree().top()) {