Fix alignment issue of ContiguousContainer

third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h

Index: third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h b/third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h
index b6275a15ba5cd8870092cc4b59bb129a44125e54..116eaf93b8d63828f6d3c7bb845bc1081af01306 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/FloatClipDisplayItem.h
@@ -13,10 +13,10 @@ namespace blink {
 
 class RoundedRect;
 
-class PLATFORM_EXPORT FloatClipDisplayItem final : public PairedBeginDisplayItem {
+class PLATFORM_EXPORT FloatClipDisplayItem final : public PairedBeginDisplayItem<FloatClipDisplayItem> {
 public:
     FloatClipDisplayItem(const DisplayItemClient& client, Type type, const FloatRect& clipRect)
-        : PairedBeginDisplayItem(client, type, sizeof(*this))
+        : PairedBeginDisplayItem(client, type)
         , m_clipRect(clipRect)
     {
         ASSERT(isFloatClipType(type));
@@ -40,10 +40,10 @@ private:
     const FloatRect m_clipRect;
 };
 
-class PLATFORM_EXPORT EndFloatClipDisplayItem final : public PairedEndDisplayItem {
+class PLATFORM_EXPORT EndFloatClipDisplayItem final : public PairedEndDisplayItem<EndFloatClipDisplayItem> {
 public:
     EndFloatClipDisplayItem(const DisplayItemClient& client, Type type)
-        : PairedEndDisplayItem(client, type, sizeof(*this))
+        : PairedEndDisplayItem(client, type)
     {
         ASSERT(isEndFloatClipType(type));
     }