Fix histogram timer to generate ProfViz compatible log.

After histrogram timer added time recaling functionality,
some events, e.g. parse, histogram timer generates event log ending with 'MicroSeconds'.

Since ProfViz can't recorgnize it, this patch cuts off 'MicroSeconds' postfix.

R=vogelheim@chromium.org, yangguo@chromium.org
BUG=chromium:
LOG=N

Review URL: https://codereview.chromium.org/1771293002

Cr-Commit-Position: refs/heads/master@{#34710}

AUTHORS

@@ -87,6 +87,7 @@ Michael Smith <mike@w3.org>
 Mike Gilbert <floppymaster@gmail.com>
 Mike Pennisi <mike@mikepennisi.com>
 Milton Chiang <milton.chiang@mediatek.com>
+Myeong-bo Shim <m0609.shim@samsung.com>
 Nicolas Antonius Ernst Leopold Maria Kaiser <nikai@nikai.net>
 Paolo Giarrusso <p.giarrusso@gmail.com>
 Patrick Gansterer <paroga@paroga.com>

tools/profviz/composer.js

@@ -104,15 +104,15 @@ function PlotScriptComposer(kResX, kResY, error_output) {
         new TimerEvent("recompile sync", "#CC0044",  true, 0),
       'V8.RecompileConcurrent':
         new TimerEvent("recompile async", "#CC4499", false, 1),
-      'V8.CompileEval':
+      'V8.CompileEvalMicroSeconds':
         new TimerEvent("compile eval", "#CC4400",  true, 0),
       'V8.IcMiss':
         new TimerEvent("ic miss", "#CC9900", false, 0),
-      'V8.Parse':
+      'V8.ParseMicroSeconds':
         new TimerEvent("parse", "#00CC00",  true, 0),
-      'V8.PreParse':
+      'V8.PreParseMicroSeconds':
         new TimerEvent("preparse", "#44CC00",  true, 0),
-      'V8.ParseLazy':
+      'V8.ParseLazyMicroSeconds':
         new TimerEvent("lazy parse", "#00CC44",  true, 0),
       'V8.GCScavenger':
         new TimerEvent("gc scavenge", "#0044CC",  true, 0),