Add UMA metrics for root scroller intervention to track forcing passive breakage.

third_party/WebKit/Source/core/events/AddEventListenerOptionsResolved.h

Index: third_party/WebKit/Source/core/events/AddEventListenerOptionsResolved.h
diff --git a/third_party/WebKit/Source/core/events/AddEventListenerOptionsResolved.h b/third_party/WebKit/Source/core/events/AddEventListenerOptionsResolved.h
new file mode 100644
index 0000000000000000000000000000000000000000..4800e8787473c916fb86e4b74f33d332d53684ec
--- /dev/null
+++ b/third_party/WebKit/Source/core/events/AddEventListenerOptionsResolved.h
@@ -0,0 +1,31 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef AddEventListenerOptionsResolved_h
+#define AddEventListenerOptionsResolved_h
+
+#include "core/events/AddEventListenerOptions.h"
+
+namespace blink {
+
+class CORE_EXPORT AddEventListenerOptionsResolved : public AddEventListenerOptions {

[Rick Byers, 2016/07/11 14:41:52]

please add a comment describing the design here.  I.e. AddEventListenerOptions
is what's specified, but then we do some processing to decide what options to
actually apply and the result (along with details of WHY) is stored in
AddEventListenerOptionsResolved.

[dtapuska, 2016/07/11 15:46:05]

Done.

+    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+
+public:
+    AddEventListenerOptionsResolved();
+    AddEventListenerOptionsResolved(const AddEventListenerOptions&);
+    virtual ~AddEventListenerOptionsResolved();
+
+    void setPassiveForcedForDocumentTarget(bool forced) { m_passiveForcedForDocumentTarget = forced; }
+    bool passiveForcedForDocumentTarget() const { return m_passiveForcedForDocumentTarget; }
+
+    DECLARE_VIRTUAL_TRACE();
+
+private:
+    bool m_passiveForcedForDocumentTarget;
+};
+
+} // namespace blink
+
+#endif // AddEventListenerOptionsResolved_h