first-paint and first-contentful paint

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

Index: third_party/WebKit/Source/core/timing/PerformanceEntry.h
diff --git a/third_party/WebKit/Source/core/timing/PerformanceEntry.h b/third_party/WebKit/Source/core/timing/PerformanceEntry.h
index 3abb644dda4189d496bf00ce65e6020d9086a512..8933442cf17df1f7331e3971ec2641e0d47d07fb 100644
--- a/third_party/WebKit/Source/core/timing/PerformanceEntry.h
+++ b/third_party/WebKit/Source/core/timing/PerformanceEntry.h
@@ -43,8 +43,8 @@ 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>,
@@ -64,6 +64,7 @@ class CORE_EXPORT PerformanceEntry
     Resource = 1 << 5,
     LongTask = 1 << 6,
     TaskAttribution = 1 << 7,
+    Paint = 1 << 8
   };
 
   String name() const;