Remove HistogramSupport abstraction layer

Source/core/css/FontFaceSet.cpp

 /*
  * Copyright (C) 2013 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 23 matching lines @@
 #include "bindings/v8/ScriptState.h"
 #include "core/css/CSSFontFaceLoadEvent.h"
 #include "core/css/CSSFontFaceSource.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/css/CSSParser.h"
 #include "core/css/CSSSegmentedFontFace.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
-#include "core/platform/HistogramSupport.h"
+#include "public/platform/Platform.h"
 
 namespace WebCore {
 
 static const int defaultFontSize = 10;
 static const char* const defaultFontFamily = "sans-serif";
 
 class LoadFontPromiseResolver : public CSSSegmentedFontFace::LoadFontCallback {
 public:
     static PassRefPtr<LoadFontPromiseResolver> create(const FontFamily& family, ScriptPromise promise, ExecutionContext* context)
     {
@@ skipping 380 matching lines @@
     font = style->font();
     font.update(styleResolver->fontSelector());
     return true;
 }
 
 void FontFaceSet::FontLoadHistogram::record()
 {
     if (m_recorded)
         return;
     m_recorded = true;
-    HistogramSupport::histogramCustomCounts("WebFont.WebFontsInPage", m_count, 1, 100, 50);
+    WebKit::Platform::current()->histogramCustomCounts("WebFont.WebFontsInPage", m_count, 1, 100, 50);
 }
 
 static const char* supplementName()
 {
     return "FontFaceSet";
 }
 
 PassRefPtr<FontFaceSet> FontFaceSet::from(Document* document)
 {
     RefPtr<FontFaceSet> fonts = static_cast<FontFaceSet*>(SupplementType::from(document, supplementName()));
     if (!fonts) {
         fonts = FontFaceSet::create(document);
         SupplementType::provideTo(document, supplementName(), fonts);
     }
 
     return fonts.release();
 }
 
 void FontFaceSet::didLayout(Document* document)
 {
     if (FontFaceSet* fonts = static_cast<FontFaceSet*>(SupplementType::from(document, supplementName())))
         fonts->didLayout();
 }
 
 
 } // namespace WebCore