Rename DisplayItem::Type enum constants to Chromium style.

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index c91ce2c1b9e9233aa3281890e7b96ecee15f2e05..4a006204403533b2a1a22278400a4018759690ea 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -317,10 +317,10 @@ public:
 private:
     void paintPageOverlay(const PageOverlay& pageOverlay, GraphicsContext& graphicsContext, const WebSize& size) const override
     {
-        if (DrawingRecorder::useCachedDrawingIfPossible(graphicsContext, pageOverlay, DisplayItem::PageOverlay))
+        if (DrawingRecorder::useCachedDrawingIfPossible(graphicsContext, pageOverlay, DisplayItem::kPageOverlay))
             return;
         FloatRect rect(0, 0, size.width, size.height);
-        DrawingRecorder drawingRecorder(graphicsContext, pageOverlay, DisplayItem::PageOverlay, rect);
+        DrawingRecorder drawingRecorder(graphicsContext, pageOverlay, DisplayItem::kPageOverlay, rect);
         graphicsContext.fillRect(rect, m_color);
     }