[SPv2] Defer decision of raster invalidation after paint for changes z-index, transform, etc.

third_party/WebKit/Source/platform/graphics/ContiguousContainer.h

Index: third_party/WebKit/Source/platform/graphics/ContiguousContainer.h
diff --git a/third_party/WebKit/Source/platform/graphics/ContiguousContainer.h b/third_party/WebKit/Source/platform/graphics/ContiguousContainer.h
index 98bce1957c4aa2692f746cff3ceb33aaef9a4653..dc5210f5ccc7661a8ef48ac7ee208be57a08ac88 100644
--- a/third_party/WebKit/Source/platform/graphics/ContiguousContainer.h
+++ b/third_party/WebKit/Source/platform/graphics/ContiguousContainer.h
@@ -192,14 +192,15 @@ public:
 
     void swap(ContiguousContainer& other) { ContiguousContainerBase::swap(other); }
 
-    // Appends a new element using memcpy, then default-constructs a base
-    // element in its place. Use with care.
-    BaseElementType& appendByMoving(BaseElementType& item, size_t size)
+    // Appends a new element using memcpy, then constructs a base element in its place with args.
+    // Use with care.
+    template <typename... Args>
+    BaseElementType& appendByMoving(BaseElementType& item, size_t size, Args&&... args)
     {
         ASSERT(size >= sizeof(BaseElementType));
         void* newItem = alignedAllocate(size);
         memcpy(newItem, static_cast<void*>(&item), size);
-        new (&item) BaseElementType;
+        new (&item) BaseElementType(std::forward<Args>(args)...);
         return *static_cast<BaseElementType*>(newItem);
     }