first-paint and first-contentful paint

third_party/WebKit/Source/core/timing/PerformanceEntry.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 25 matching lines @@
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ScriptState;
 class ScriptValue;
 class V8ObjectBuilder;
 
-using PerformanceEntryType = unsigned char;
-using PerformanceEntryTypeMask = unsigned char;
+using PerformanceEntryType = unsigned short;

[panicker, 2017/01/06 23:55:31]

prefer unsigned long so we don't have to worry about this for upto 32 types (vs.
16) 

[sunjian, 2017/01/07 00:19:34]

Done.

+using PerformanceEntryTypeMask = unsigned short;
 
 class CORE_EXPORT PerformanceEntry
     : public GarbageCollectedFinalized<PerformanceEntry>,
       public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   virtual ~PerformanceEntry();
 
   enum EntryType {
     Invalid = 0,
     Navigation = 1 << 0,
     Composite = 1 << 1,
     Mark = 1 << 2,
     Measure = 1 << 3,
     Render = 1 << 4,
     Resource = 1 << 5,
     LongTask = 1 << 6,
     TaskAttribution = 1 << 7,
+    Paint = 1 << 8
   };
 
   String name() const;
   String entryType() const;
   double startTime() const;
   double duration() const;
 
   ScriptValue toJSONForBinding(ScriptState*) const;
 
   PerformanceEntryType entryTypeEnum() const { return m_entryTypeEnum; }
@@ skipping 24 matching lines @@
   const String m_name;
   const String m_entryType;
   const double m_startTime;
   const double m_duration;
   const PerformanceEntryType m_entryTypeEnum;
 };
 
 }  // namespace blink
 
 #endif  // PerformanceEntry_h