Reenable framebusting deprecation, change it to allow navigation if iframe has ever had a user gestu

third_party/WebKit/Source/core/input/GestureManager.cpp

Index: third_party/WebKit/Source/core/input/GestureManager.cpp
diff --git a/third_party/WebKit/Source/core/input/GestureManager.cpp b/third_party/WebKit/Source/core/input/GestureManager.cpp
index a9fc821e4441b9c384e6220d74f8643dedc36548..181cec446f314c6b5c5e4b3d2e2b72f63299f974 100644
--- a/third_party/WebKit/Source/core/input/GestureManager.cpp
+++ b/third_party/WebKit/Source/core/input/GestureManager.cpp
@@ -139,7 +139,10 @@ WebInputEventResult GestureManager::handleGestureTap(
   uint64_t preDispatchDomTreeVersion = m_frame->document()->domTreeVersion();
   uint64_t preDispatchStyleVersion = m_frame->document()->styleVersion();
 
+  // TODO(japhet): UserGestureIndicator should setHasReceivedUserGesture()
+  // on the Document.
   UserGestureIndicator gestureIndicator(DefinitelyProcessingUserGesture);

[Rick Byers, 2016/10/06 16:26:47]

for really simple cases like this, perhaps we should just add the Document
argument to the UserGestureIndicator constructor and use it?  Then you only need
TODOs for the cases where you don't know the Document as UserGestureIndicator
construction time.

+  m_frame->document()->setHasReceivedUserGesture();
 
   HitTestResult currentHitTest = targetedEvent.hitTestResult();