Rename WebKit namespace to blink

Source/core/rendering/RenderLayerStackingNode.cpp

Index: Source/core/rendering/RenderLayerStackingNode.cpp
diff --git a/Source/core/rendering/RenderLayerStackingNode.cpp b/Source/core/rendering/RenderLayerStackingNode.cpp
index 74fa08946f0d5bf9b0547be9ed89c1b55f5ede50..401202b9e535bbc26b5ff4ac6b7d385e49d46b43 100644
--- a/Source/core/rendering/RenderLayerStackingNode.cpp
+++ b/Source/core/rendering/RenderLayerStackingNode.cpp
@@ -627,7 +627,7 @@ bool RenderLayerStackingNode::setNeedsToBeStackingContainer(bool needsToBeStacki
     // containers some point. This should be recorded at most once per
     // RenderLayer, so we check m_needsToBeStackingContainerHasBeenRecorded.
     if (layer()->acceleratedCompositingForOverflowScrollEnabled() && !m_needsToBeStackingContainerHasBeenRecorded) {
-        WebKit::Platform::current()->histogramEnumeration("Renderer.CompositedScrolling", RenderLayer::NeedsToBeStackingContainerBucket, RenderLayer::CompositedScrollingHistogramMax);
+        blink::Platform::current()->histogramEnumeration("Renderer.CompositedScrolling", RenderLayer::NeedsToBeStackingContainerBucket, RenderLayer::CompositedScrollingHistogramMax);
         m_needsToBeStackingContainerHasBeenRecorded = true;
     }