Move persistent gesture state to Document, add DocumentUserGestureToken

third_party/WebKit/Source/core/page/DragController.cpp

Index: third_party/WebKit/Source/core/page/DragController.cpp
diff --git a/third_party/WebKit/Source/core/page/DragController.cpp b/third_party/WebKit/Source/core/page/DragController.cpp
index 5f2b5a7af08209d10865e5562a07c4b49745ad10..36f46d356c2d51687be1819b9512ea0b436b2309 100644
--- a/third_party/WebKit/Source/core/page/DragController.cpp
+++ b/third_party/WebKit/Source/core/page/DragController.cpp
@@ -34,6 +34,7 @@
 #include "core/clipboard/DataTransferAccessPolicy.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentFragment.h"
+#include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/Element.h"
 #include "core/dom/Node.h"
 #include "core/dom/Text.h"
@@ -241,6 +242,8 @@ bool DragController::performDrag(DragData* dragData) {
   DCHECK(dragData);
   m_documentUnderMouse = m_page->deprecatedLocalMainFrame()->documentAtPoint(
       dragData->clientPosition());
+  UserGestureIndicator gesture(DocumentUserGestureToken::create(
+      m_documentUnderMouse, UserGestureToken::NewGesture));
   if ((m_dragDestinationAction & DragDestinationActionDHTML) &&
       m_documentIsHandlingDrag) {
     LocalFrame* mainFrame = m_page->deprecatedLocalMainFrame();