[LayoutNG] Support objects that are opaque to whitespace collapsing

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc

Index: third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc b/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc
index 6751cb388595d7125467ea5f9413db518ed303d6..1abb199e154f001f6fd2bf0b4906ffc09d97cdc8 100644
--- a/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc
+++ b/third_party/WebKit/Source/core/layout/ng/inline/ng_inline_node.cc
@@ -230,12 +230,12 @@ LayoutObject* NGInlineNode::CollectInlines(LayoutObject* start,
       // Add floats and positioned objects in the same way as atomic inlines.
       // Because these objects need positions, they will be handled in
       // NGInlineLayoutAlgorithm.
-      builder->Append(NGInlineItem::kFloating, kObjectReplacementCharacter,
-                      nullptr, node);
+      builder->AppendAsOpaqueToSpaceCollapsing(NGInlineItem::kFloating, nullptr,
+                                               node);
 
     } else if (node->IsOutOfFlowPositioned()) {
-      builder->Append(NGInlineItem::kOutOfFlowPositioned,
-                      kObjectReplacementCharacter, nullptr, node);
+      builder->AppendAsOpaqueToSpaceCollapsing(
+          NGInlineItem::kOutOfFlowPositioned, nullptr, node);
 
     } else if (node->IsAtomicInlineLevel()) {
       // For atomic inlines add a unicode "object replacement character" to