Remove Enumeration Histograms from the Blink Platform API.

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp

 /*
  * Copyright (C) 2012 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:
  *
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  *     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
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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 #include "platform/graphics/Canvas2DLayerBridge.h"
 
+#include "platform/Histogram.h"
 #include "platform/TraceEvent.h"
 #include "platform/graphics/CanvasMetrics.h"
 #include "platform/graphics/ExpensiveCanvasHeuristicParameters.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/gpu/SharedContextRateLimiter.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebGraphicsContext3D.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
@@ skipping 300 matching lines @@
     // that significantly helps a number of use cases. The rationale is that if
     // immediate rendering was needed once, it is likely to be needed at least
     // once per frame, which eliminates the possibility for inter-frame
     // overdraw optimization. Furthermore, in cases where immediate mode is
     // required multiple times per frame, the repeated flushing of deferred
     // commands would cause significant overhead, so it is better to just stop
     // trying to defer altogether.
     if (!m_isDeferralEnabled)
         return;
 
-    Platform::current()->histogramEnumeration("Canvas.GPUAccelerated2DCanvasDisableDeferralReason", reason, DisableDeferralReasonCount);
+    DEFINE_STATIC_LOCAL(EnumerationHistogram, gpuDisabledHistogram, ("Canvas.GPUAccelerated2DCanvasDisableDeferralReason", DisableDeferralReasonCount));
+    gpuDisabledHistogram.count(reason);
     CanvasMetrics::countCanvasContextUsage(CanvasMetrics::GPUAccelerated2DCanvasDeferralDisabled);
     flushRecordingOnly();
     // Because we will be discarding the recorder, if the flush failed
     // content will be lost -> force m_haveRecordedDrawCommands to false
     m_haveRecordedDrawCommands = false;
 
     m_isDeferralEnabled = false;
     m_recorder.clear();
     // install the current matrix/clip stack onto the immediate canvas
     SkSurface* surface = getOrCreateSurface();
@@ skipping 459 matching lines @@
 
 Canvas2DLayerBridge::MailboxInfo::MailboxInfo(const MailboxInfo& other)
 {
     memcpy(&m_mailbox, &other.m_mailbox, sizeof(m_mailbox));
     m_image = other.m_image;
     m_parentLayerBridge = other.m_parentLayerBridge;
 }
 
 void Canvas2DLayerBridge::Logger::reportHibernationEvent(HibernationEvent event)
 {
-    blink::Platform::current()->histogramEnumeration("Canvas.HibernationEvents", event, HibernationEventCount);
+    DEFINE_STATIC_LOCAL(EnumerationHistogram, hibernationHistogram, ("Canvas.HibernationEvents", HibernationEventCount));
+    hibernationHistogram.count(event);
 }
 
 } // namespace blink