DevTools: bring violations and timeline warnings in sync.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
index bb5a60dca8f3e513e47ad38979e3c4f51b1e33b6..9802758c2bb6b33c40d9ddfc995263e8dc96778c 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
@@ -1738,6 +1738,12 @@ Timeline.TimelineUIUtils = class {
             'Idle callback execution extended beyond deadline by ' +
             Number.millisToString(event.duration - eventData['allottedMilliseconds'], true));
         break;
+      case warnings.LongHandler:
+        span.textContent = Common.UIString('Handler took ' + Number.millisToString(event.duration, true));

[alph, 2016/11/19 05:36:27]

May be it can be more explicit on what's wrong, e.g. 'Handler took too long ...'

[caseq, 2016/11/19 05:51:08]

Common.UIString('Handler look %s', Number.millisToString(...))

+        break;
+      case warnings.LongRecurringHandler:
+        span.textContent = Common.UIString('Recurring handler took ' + Number.millisToString(event.duration, true));

[caseq, 2016/11/19 05:51:08]

ditto.

+        break;
       case warnings.V8Deopt:
         span.appendChild(UI.createExternalLink(
             'https://github.com/GoogleChrome/devtools-docs/issues/53', Common.UIString('Not optimized')));