Remove Enumeration Histograms from the Blink Platform API.

third_party/WebKit/Source/platform/graphics/RecordingImageBufferSurface.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/RecordingImageBufferSurface.h"
 
+#include "platform/Histogram.h"
 #include "platform/graphics/CanvasMetrics.h"
 #include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
-#include "public/platform/Platform.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 RecordingImageBufferSurface::RecordingImageBufferSurface(const IntSize& size, PassOwnPtr<RecordingImageBufferFallbackSurfaceFactory> fallbackFactory, OpacityMode opacityMode)
     : ImageBufferSurface(size, opacityMode)
     , m_imageBuffer(0)
@@ skipping 46 matching lines @@
     return m_fallbackSurface->writePixels(origInfo, pixels, rowBytes, x, y);
 }
 
 void RecordingImageBufferSurface::fallBackToRasterCanvas(FallbackReason reason)
 {
     if (m_fallbackSurface) {
         ASSERT(!m_currentFrame);
         return;
     }
 
-    Platform::current()->histogramEnumeration("Canvas.DisplayListFallbackReason", reason, FallbackReasonCount);
+    DEFINE_THREAD_SAFE_STATIC_LOCAL(EnumerationHistogram, canvasFallbackHistogram, new EnumerationHistogram("Canvas.DisplayListFallbackReason", FallbackReasonCount));
+    canvasFallbackHistogram.count(reason);
 
     m_fallbackSurface = m_fallbackFactory->createSurface(size(), opacityMode());
     m_fallbackSurface->setImageBuffer(m_imageBuffer);
 
     if (m_previousFrame) {
         m_previousFrame->playback(m_fallbackSurface->canvas());
         m_previousFrame.clear();
     }
 
     if (m_currentFrame) {
@@ skipping 254 matching lines @@
 
 void RecordingImageBufferSurface::setIsHidden(bool hidden)
 {
     if (m_fallbackSurface)
         m_fallbackSurface->setIsHidden(hidden);
     else
         ImageBufferSurface::setIsHidden(hidden);
 }
 
 } // namespace blink