Remove HistogramSupport abstraction layer

Source/core/rendering/RenderLayerStackingNode.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 26 matching lines @@
  * version of this file under the LGPL, indicate your decision by
  * deletingthe provisions above and replace them with the notice and
  * other provisions required by the MPL or the GPL, as the case may be.
  * If you do not delete the provisions above, a recipient may use your
  * version of this file under any of the LGPL, the MPL or the GPL.
  */
 
 #include "config.h"
 #include "core/rendering/RenderLayerStackingNode.h"
 
-#include "core/platform/HistogramSupport.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderLayerCompositor.h"
 #include "core/rendering/RenderView.h"
+#include "public/platform/Platform.h"
 
 namespace WebCore {
 
 // FIXME: This should not require RenderLayer. There is currently a cycle where
 // in order to determine if we shoulBeNormalFlowOnly() and isStackingContainer()
 // we have to ask the render layer about some of its state.
 RenderLayerStackingNode::RenderLayerStackingNode(RenderLayer* layer)
     : m_layer(layer)
     , m_normalFlowListDirty(true)
     , m_descendantsAreContiguousInStackingOrder(false)
@@ skipping 557 matching lines @@
 
 bool RenderLayerStackingNode::setNeedsToBeStackingContainer(bool needsToBeStackingContainer)
 {
     if (m_needsToBeStackingContainer == needsToBeStackingContainer)
         return false;
 
     // Count the total number of RenderLayers which need to be stacking
     // containers some point. This should be recorded at most once per
     // RenderLayer, so we check m_needsToBeStackingContainerHasBeenRecorded.
     if (layer()->acceleratedCompositingForOverflowScrollEnabled() && !m_needsToBeStackingContainerHasBeenRecorded) {
-        HistogramSupport::histogramEnumeration("Renderer.CompositedScrolling", RenderLayer::NeedsToBeStackingContainerBucket, RenderLayer::CompositedScrollingHistogramMax);
+        WebKit::Platform::current()->histogramEnumeration("Renderer.CompositedScrolling", RenderLayer::NeedsToBeStackingContainerBucket, RenderLayer::CompositedScrollingHistogramMax);
         m_needsToBeStackingContainerHasBeenRecorded = true;
     }
 
     m_needsToBeStackingContainer = needsToBeStackingContainer;
 
     return true;
 }
 
 RenderLayerStackingNode* RenderLayerStackingNode::ancestorStackingContainerNode() const
 {
@@ skipping 14 matching lines @@
         return ancestor->stackingNode();
     return 0;
 }
 
 RenderLayerModelObject* RenderLayerStackingNode::renderer() const
 {
     return m_layer->renderer();
 }
 
 } // namespace WebCore