Remove HistogramSupport abstraction layer

Source/core/css/CSSFontFaceSource.cpp

Index: Source/core/css/CSSFontFaceSource.cpp
diff --git a/Source/core/css/CSSFontFaceSource.cpp b/Source/core/css/CSSFontFaceSource.cpp
index c0bdb7c3e0fbfca95e8360cfcc220e11efced33c..7dad984971b5e579c56958bad412e24275a66f82 100644
--- a/Source/core/css/CSSFontFaceSource.cpp
+++ b/Source/core/css/CSSFontFaceSource.cpp
@@ -30,10 +30,10 @@
 #include "core/css/CSSFontFace.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/fetch/FontResource.h"
-#include "core/platform/HistogramSupport.h"
 #include "core/platform/graphics/FontCache.h"
 #include "core/platform/graphics/FontDescription.h"
 #include "core/platform/graphics/SimpleFontData.h"
+#include "public/platform/Platform.h"
 #include "wtf/CurrentTime.h"
 
 #if ENABLE(SVG_FONTS)
@@ -280,7 +280,7 @@ void CSSFontFaceSource::FontLoadHistograms::loadStarted()
 void CSSFontFaceSource::FontLoadHistograms::recordLocalFont(bool loadSuccess)
 {
     if (!m_loadStartTime) {
-        HistogramSupport::histogramEnumeration("WebFont.LocalFontUsed", loadSuccess ? 1 : 0, 2);
+        WebKit::Platform::current()->histogramEnumeration("WebFont.LocalFontUsed", loadSuccess ? 1 : 0, 2);
         m_loadStartTime = -1; // Do not count this font again.
     }
 }
@@ -289,14 +289,14 @@ void CSSFontFaceSource::FontLoadHistograms::recordRemoteFont(const FontResource*
 {
     if (m_loadStartTime > 0 && font && !font->isLoading()) {
         int duration = static_cast<int>(currentTimeMS() - m_loadStartTime);
-        HistogramSupport::histogramCustomCounts(histogramName(font), duration, 0, 10000, 50);
+        WebKit::Platform::current()->histogramCustomCounts(histogramName(font), duration, 0, 10000, 50);
         m_loadStartTime = -1;
 
         enum { Miss, Hit, DataUrl, CacheHitEnumMax };
         int histogramValue = font->url().protocolIsData() ? DataUrl
             : font->response().wasCached() ? Hit
             : Miss;
-        HistogramSupport::histogramEnumeration("WebFont.CacheHit", histogramValue, CacheHitEnumMax);
+        WebKit::Platform::current()->histogramEnumeration("WebFont.CacheHit", histogramValue, CacheHitEnumMax);
     }
 }