Rename DisplayItem::Type enum constants to Chromium style.

third_party/WebKit/Source/core/paint/PaintControllerPaintTest.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PaintControllerPaintTest_h
 #define PaintControllerPaintTest_h
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
@@ skipping 98 matching lines @@
             break; \
         const TestDisplayItem expected[] = { __VA_ARGS__ }; \
         for (size_t index = 0; index < std::min<size_t>(actual.size(), expectedSize); index++) { \
             TRACE_DISPLAY_ITEMS(index, expected[index], actual[index]); \
             EXPECT_EQ(expected[index].client(), actual[index].client()); \
             EXPECT_EQ(expected[index].getType(), actual[index].getType()); \
         } \
     } while (false);
 
 // Shorter names for frequently used display item types in tests.
-const DisplayItem::Type backgroundType = DisplayItem::BoxDecorationBackground;
+const DisplayItem::Type backgroundType = DisplayItem::kBoxDecorationBackground;
 const DisplayItem::Type foregroundType = DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground);
-const DisplayItem::Type documentBackgroundType = DisplayItem::DocumentBackground;
+const DisplayItem::Type documentBackgroundType = DisplayItem::kDocumentBackground;
 
 } // namespace blink
 
 #endif // PaintControllerPaintTest_h