Adding Rappor metrics for disabling cross-origin autoplay with sound experiment

third_party/WebKit/Source/core/html/AutoplayUmaHelper.h

 // 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 AutoplayUmaHelper_h
 #define AutoplayUmaHelper_h
 
 #include "core/CoreExport.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/events/EventListener.h"
 #include "platform/heap/Handle.h"
 
+#include <set>
+
 namespace blink {
 
 // These values are used for histograms. Do not reorder.
 enum class AutoplaySource {
   // Autoplay comes from HTMLMediaElement `autoplay` attribute.
   Attribute = 0,
   // Autoplay comes from `play()` method.
   Method = 1,
   // This enum value must be last.
   NumberOfSources = 2,
 };
 
 // These values are used for histograms. Do not reorder.
 enum class AutoplayUnmuteActionStatus {
   Failure = 0,
   Success = 1,
   NumberOfStatus = 2,
 };
 
 // These values are used for histograms. Do not reorder.
 enum AutoplayBlockedReason {
   AutoplayBlockedReasonDataSaver = 0,
   AutoplayBlockedReasonSetting = 1,
   AutoplayBlockedReasonDataSaverAndSetting = 2,
   // Keey at the end.
   AutoplayBlockedReasonMax = 3
 };
 
+enum class CrossOriginAutoplayResult {
+  AutoplayAllowed,
+  AutoplayBlocked,
+  PlayedWithGesture,
+};
+
 class Document;
 class ElementVisibilityObserver;
 class HTMLMediaElement;
 
 class CORE_EXPORT AutoplayUmaHelper : public EventListener,
                                       public ContextLifecycleObserver {
   USING_GARBAGE_COLLECTED_MIXIN(AutoplayUmaHelper);
 
  public:
   static AutoplayUmaHelper* create(HTMLMediaElement*);
 
   ~AutoplayUmaHelper();
 
   bool operator==(const EventListener&) const override;
 
   void contextDestroyed() override;
 
   void onAutoplayInitiated(AutoplaySource);
 
+  void recordCrossOriginAutoplayResult(CrossOriginAutoplayResult);
   void recordAutoplayUnmuteStatus(AutoplayUnmuteActionStatus);
 
   void didMoveToNewDocument(Document& oldDocument);
 
   bool isVisible() const { return m_isVisible; }
 
   bool hasSource() const { return m_source != AutoplaySource::NumberOfSources; }
 
   DECLARE_VIRTUAL_TRACE();
 
@@ skipping 38 matching lines @@
 
   // The starting time of autoplaying muted video.
   int64_t m_mutedVideoAutoplayOffscreenStartTimeMS;
 
   // The duration an autoplaying muted video has been in offscreen.
   int64_t m_mutedVideoAutoplayOffscreenDurationMS;
 
   // Whether an autoplaying muted video is visible.
   bool m_isVisible;
 
+  std::set<CrossOriginAutoplayResult> m_recordedCrossOriginAutoplayResults;
+
   // The observer is used to observer an autoplaying muted video changing it's
   // visibility, which is used for offscreen duration UMA.  The UMA is pending
   // for recording as long as this observer is non-null.
   Member<ElementVisibilityObserver>
       m_mutedVideoOffscreenDurationVisibilityObserver;
 };
 
 }  // namespace blink
 
 #endif  // AutoplayUmaHelper_h