Fix alignment issue of ContiguousContainer

third_party/WebKit/Source/platform/graphics/paint/PaintControllerTest.cpp

 // Copyright 2014 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.
 
 #include "platform/graphics/paint/PaintController.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/CachedDisplayItem.h"
 #include "platform/graphics/paint/ClipPathDisplayItem.h"
@@ skipping 29 matching lines @@
     }
 
     std::unique_ptr<PaintController> m_paintController;
     bool m_originalSlimmingPaintV2Enabled;
 };
 
 const DisplayItem::Type foregroundDrawingType = static_cast<DisplayItem::Type>(DisplayItem::DrawingPaintPhaseFirst + 4);
 const DisplayItem::Type backgroundDrawingType = DisplayItem::DrawingPaintPhaseFirst;
 const DisplayItem::Type clipType = DisplayItem::ClipFirst;
 
-class TestDisplayItem final : public DisplayItem {
+class TestDisplayItem final : public DisplayItemBase<TestDisplayItem> {
 public:
-    TestDisplayItem(const FakeDisplayItemClient& client, Type type) : DisplayItem(client, type, sizeof(*this)) { }
+    TestDisplayItem(const FakeDisplayItemClient& client, Type type)
+        : DisplayItemBase(client, type) { }
 
     void replay(GraphicsContext&) const final { ASSERT_NOT_REACHED(); }
     void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const final { ASSERT_NOT_REACHED(); }
 };
 
 #ifndef NDEBUG
 #define TRACE_DISPLAY_ITEMS(i, expected, actual) \
     String trace = String::format("%d: ", (int)i) + "Expected: " + (expected).asDebugString() + " Actual: " + (actual).asDebugString(); \
     SCOPED_TRACE(trace.utf8().data());
 #else
@@ skipping 863 matching lines @@
             getPaintController().createAndAppend<BeginClipPathDisplayItem>(client, path);
         drawRect(context, client, backgroundDrawingType, FloatRect(0, 0, 100, 100));
         for (int j = 0; j < 50; ++j)
             getPaintController().createAndAppend<EndClipPathDisplayItem>(client);
         getPaintController().commitNewDisplayItems(LayoutSize());
         EXPECT_FALSE(getPaintController().paintArtifact().isSuitableForGpuRasterization());
     }
 }
 
 } // namespace blink