DevTools: add the logging aspect into the PerformanceMonitor

third_party/WebKit/Source/core/inspector/ConsoleTypes.h

Index: third_party/WebKit/Source/core/inspector/ConsoleTypes.h
diff --git a/third_party/WebKit/Source/core/inspector/ConsoleTypes.h b/third_party/WebKit/Source/core/inspector/ConsoleTypes.h
index 88df00c3a5667f437cb7ad015d4196ef7207acb0..8408deb6593f4dfaa47bb7fc69829f9f7c82b287 100644
--- a/third_party/WebKit/Source/core/inspector/ConsoleTypes.h
+++ b/third_party/WebKit/Source/core/inspector/ConsoleTypes.h
@@ -18,7 +18,8 @@ enum MessageSource {
   SecurityMessageSource,
   OtherMessageSource,
   DeprecationMessageSource,
-  WorkerMessageSource
+  WorkerMessageSource,
+  PerfMessageSource
 };
 
 enum MessageLevel {
@@ -26,7 +27,8 @@ enum MessageLevel {
   LogMessageLevel = 1,
   InfoMessageLevel = 5,
   WarningMessageLevel = 2,
-  ErrorMessageLevel = 3
+  ErrorMessageLevel = 3,
+  ViolationMessageLevel = 6

[panicker, 2016/11/04 20:59:28]

Seems like we might need severity levels within ViolationMessageLevel, but this
is probably fine to start with

[panicker, 2016/11/04 20:59:28]

PerfViolationMessageLevel ?
I don't think we want non-performance related messages here (yet)

[pfeldman, 2016/11/04 21:26:39]

I'll make it a source, not a level, then you get the levels. Also, violations
seems more appropriate for lighthouse.

 };
 }