Offer User Timing in workers

Source/core/timing/PerformanceBase.h

Index: Source/core/timing/PerformanceBase.h
diff --git a/Source/core/timing/Performance.h b/Source/core/timing/PerformanceBase.h
similarity index 77%
copy from Source/core/timing/Performance.h
copy to Source/core/timing/PerformanceBase.h
index 72ea459a6af525d64fd9ebe7ba0fa63c77d61a9a..52a82b5240c2bcb41278109ec1c68e205b17d195 100644
--- a/Source/core/timing/Performance.h
+++ b/Source/core/timing/PerformanceBase.h
@@ -29,16 +29,12 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef Performance_h
-#define Performance_h
+#ifndef PerformanceBase_h
+#define PerformanceBase_h
 
 #include "core/CoreExport.h"
 #include "core/events/EventTarget.h"
-#include "core/frame/DOMWindowProperty.h"
-#include "core/timing/MemoryInfo.h"
 #include "core/timing/PerformanceEntry.h"
-#include "core/timing/PerformanceNavigation.h"
-#include "core/timing/PerformanceTiming.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
@@ -48,30 +44,25 @@ namespace blink {
 
 class Document;
 class ExceptionState;
+class PerformanceTiming;
 class ResourceTimingInfo;
 class UserTiming;
 
 using PerformanceEntryVector = HeapVector<Member<PerformanceEntry>>;
 
-class CORE_EXPORT Performance final : public RefCountedGarbageCollectedEventTargetWithInlineData<Performance>, public DOMWindowProperty {
-    DEFINE_WRAPPERTYPEINFO();
-    REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(Performance);
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Performance);
+class CORE_EXPORT PerformanceBase : public RefCountedGarbageCollectedEventTargetWithInlineData<PerformanceBase> {
+    REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(PerformanceBase);
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PerformanceBase);
 public:
-    static Performance* create(LocalFrame* frame)
-    {
-        return new Performance(frame);
-    }
-    virtual ~Performance();
+    virtual ~PerformanceBase();
 
     virtual const AtomicString& interfaceName() const override;
-    virtual ExecutionContext* executionContext() const override;
 
-    MemoryInfo* memory();
-    PerformanceNavigation* navigation() const;
-    PerformanceTiming* timing() const;
+    virtual PerformanceTiming* timing() const;
     double now() const;
 
+    double timeOrigin() const { return m_timeOrigin; }
+
     PerformanceEntryVector getEntries() const;
     PerformanceEntryVector getEntriesByType(const String& entryType);
     PerformanceEntryVector getEntriesByName(const String& name, const String& entryType);
@@ -100,15 +91,11 @@ public:
 
     DECLARE_VIRTUAL_TRACE();
 
-private:
-    explicit Performance(LocalFrame*);
-
+protected:
+    explicit PerformanceBase(double timeOrigin);
     bool isResourceTimingBufferFull();
     void addResourceTimingBuffer(PerformanceEntry*);
 
-    mutable Member<PerformanceNavigation> m_navigation;
-    mutable Member<PerformanceTiming> m_timing;
-
     bool isFrameTimingBufferFull();
     void addFrameTimingBuffer(PerformanceEntry*);
 
@@ -116,12 +103,11 @@ private:
     unsigned m_frameTimingBufferSize;
     PerformanceEntryVector m_resourceTimingBuffer;
     unsigned m_resourceTimingBufferSize;
-    double m_referenceTime;
+    double m_timeOrigin;
 
-    Member<MemoryInfo> m_memoryInfo;
     Member<UserTiming> m_userTiming;
 };
 
 } // namespace blink
 
-#endif // Performance_h
+#endif // PerformanceBase_h