Rename DisplayItem::Type enum constants to Chromium style.

third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp

Index: third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp
index faa26e70d0fcb9be6abeda753e7b9dbe6e38f7d2..30ae3f526d88a29189bef65fb32872e117c59cba 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMock.cpp
@@ -51,10 +51,10 @@ IntRect ScrollbarThemeMock::trackRect(const ScrollbarThemeClient& scrollbar, boo
 
 void ScrollbarThemeMock::paintTrackBackground(GraphicsContext& context, const Scrollbar& scrollbar, const IntRect& trackRect)
 {
-    if (DrawingRecorder::useCachedDrawingIfPossible(context, scrollbar, DisplayItem::ScrollbarTrackBackground))
+    if (DrawingRecorder::useCachedDrawingIfPossible(context, scrollbar, DisplayItem::kScrollbarTrackBackground))
         return;
 
-    DrawingRecorder recorder(context, scrollbar, DisplayItem::ScrollbarTrackBackground, trackRect);
+    DrawingRecorder recorder(context, scrollbar, DisplayItem::kScrollbarTrackBackground, trackRect);
     context.fillRect(trackRect, scrollbar.enabled() ? Color::lightGray : Color(0xFFE0E0E0));
 }
 
@@ -63,10 +63,10 @@ void ScrollbarThemeMock::paintThumb(GraphicsContext& context, const Scrollbar& s
     if (!scrollbar.enabled())
         return;
 
-    if (DrawingRecorder::useCachedDrawingIfPossible(context, scrollbar, DisplayItem::ScrollbarThumb))
+    if (DrawingRecorder::useCachedDrawingIfPossible(context, scrollbar, DisplayItem::kScrollbarThumb))
         return;
 
-    DrawingRecorder recorder(context, scrollbar, DisplayItem::ScrollbarThumb, thumbRect);
+    DrawingRecorder recorder(context, scrollbar, DisplayItem::kScrollbarThumb, thumbRect);
     context.fillRect(thumbRect, Color::darkGray);
 }