Remove custom counts histogram from the blink API.

third_party/WebKit/Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 16 matching lines @@
 #include "core/fetch/ResourceFetcher.h"
 
 #include "bindings/core/v8/V8DOMActivityLogger.h"
 #include "core/fetch/CrossOriginAccessControl.h"
 #include "core/fetch/FetchContext.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceLoader.h"
 #include "core/fetch/ResourceLoaderSet.h"
 #include "core/fetch/UniqueIdentifier.h"
+#include "platform/Histogram.h"
 #include "platform/Logging.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
 #include "platform/TracedValue.h"
 #include "platform/mhtml/ArchiveResource.h"
 #include "platform/mhtml/MHTMLArchive.h"
 #include "platform/network/ResourceTimingInfo.h"
 #include "platform/weborigin/KnownPorts.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "platform/weborigin/SecurityPolicy.h"
@@ skipping 1084 matching lines @@
 
 ResourceFetcher::DeadResourceStatsRecorder::DeadResourceStatsRecorder()
     : m_useCount(0)
     , m_revalidateCount(0)
     , m_loadCount(0)
 {
 }
 
 ResourceFetcher::DeadResourceStatsRecorder::~DeadResourceStatsRecorder()
 {
-    Platform::current()->histogramCustomCounts(
-        "WebCore.ResourceFetcher.HitCount", m_useCount, 0, 1000, 50);
-    Platform::current()->histogramCustomCounts(
-        "WebCore.ResourceFetcher.RevalidateCount", m_revalidateCount, 0, 1000, 50);
-    Platform::current()->histogramCustomCounts(
-        "WebCore.ResourceFetcher.LoadCount", m_loadCount, 0, 1000, 50);
+    DEFINE_THREAD_SAFE_STATIC_LOCAL(CustomCountHistogram, hitCountHistogram, new CustomCountHistogram("WebCore.ResourceFetcher.HitCount", 0, 1000, 50));
+    hitCountHistogram.count(m_useCount);
+    DEFINE_THREAD_SAFE_STATIC_LOCAL(CustomCountHistogram, revalidateCountHistogram, new CustomCountHistogram("WebCore.ResourceFetcher.RevalidateCount", 0, 1000, 50));
+    revalidateCountHistogram.count(m_revalidateCount);
+    DEFINE_THREAD_SAFE_STATIC_LOCAL(CustomCountHistogram, loadCountHistogram, new CustomCountHistogram("WebCore.ResourceFetcher.LoadCount", 0, 1000, 50));
+    loadCountHistogram.count(m_loadCount);
 }
 
 void ResourceFetcher::DeadResourceStatsRecorder::update(RevalidationPolicy policy)
 {
     switch (policy) {
     case Reload:
     case Load:
         ++m_loadCount;
         return;
     case Revalidate:
@@ skipping 12 matching lines @@
     visitor->trace(m_loaders);
     visitor->trace(m_nonBlockingLoaders);
 #if ENABLE(OILPAN)
     visitor->trace(m_documentResources);
     visitor->trace(m_preloads);
     visitor->trace(m_resourceTimingInfoMap);
 #endif
 }
 
 } // namespace blink