Remove custom counts histogram from the blink API.

third_party/WebKit/Source/core/html/parser/HTMLScriptRunner.cpp

 /*
  * Copyright (C) 2010 Google, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 19 matching lines @@
 #include "core/dom/Element.h"
 #include "core/events/Event.h"
 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h"
 #include "core/dom/Microtask.h"
 #include "core/dom/ScriptLoader.h"
 #include "core/fetch/ScriptResource.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/parser/HTMLInputStream.h"
 #include "core/html/parser/HTMLScriptRunnerHost.h"
 #include "core/html/parser/NestingLevelIncrementer.h"
+#include "platform/Histogram.h"
 #include "platform/NotImplemented.h"
 #include "platform/TraceEvent.h"
 #include "platform/TracedValue.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebFrameScheduler.h"
 #include <inttypes.h>
 
 namespace blink {
 
 namespace {
@@ skipping 170 matching lines @@
             if (!doExecuteScript(element.get(), sourceCode, scriptStartPosition, &compilationFinishTime)) {
                 scriptLoader->dispatchErrorEvent();
             } else {
                 element->dispatchEvent(Event::create(EventTypeNames::load));
             }
         }
     }
     // The exact value doesn't matter; valid time stamps are much bigger than this value.
     const double epsilon = 1;
     if (pendingScriptType == ScriptStreamer::ParsingBlocking && !m_parserBlockingScriptAlreadyLoaded && compilationFinishTime > epsilon && loadFinishTime > epsilon) {
-        Platform::current()->histogramCustomCounts("WebCore.Scripts.ParsingBlocking.TimeBetweenLoadedAndCompiled", (compilationFinishTime - loadFinishTime) * 1000, 0, 10000, 50);
+        int duration = (compilationFinishTime - loadFinishTime) * 1000;
+        DEFINE_STATIC_LOCAL(CustomCountHistogram, loadAndCompileHistogram, ("WebCore.Scripts.ParsingBlocking.TimeBetweenLoadedAndCompiled", 0, 10000, 50));
+        loadAndCompileHistogram.count(duration);
     }
 
     ASSERT(!isExecutingScript());
 }
 
 void HTMLScriptRunner::stopWatchingResourceForLoad(Resource* resource)
 {
     if (m_parserBlockingScript->resource() == resource) {
         m_parserBlockingScript->stopWatchingForLoad(this);
         m_parserBlockingScript->releaseElementAndClear();
@@ skipping 203 matching lines @@
 
 DEFINE_TRACE(HTMLScriptRunner)
 {
     visitor->trace(m_document);
     visitor->trace(m_host);
     visitor->trace(m_parserBlockingScript);
     visitor->trace(m_scriptsToExecuteAfterParsing);
 }
 
 } // namespace blink