[LayoutNG] No need to search for inline children inside a block-children block.

third_party/WebKit/Source/core/layout/ng/ng_block_node.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_block_node.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_block_node.cc b/third_party/WebKit/Source/core/layout/ng/ng_block_node.cc
index d6bc5e3f8824bed3265ef62a3cc9ea639b6292f9..4222da2771d4df68134667b617c2440d275d36f7 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_block_node.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_block_node.cc
@@ -237,10 +237,12 @@ bool NGBlockNode::CanUseNewLayout() {
 }
 
 bool NGBlockNode::HasInlineChildren() {
-  if (!layout_box_)
+  if (!layout_box_ || !layout_box_->isLayoutBlockFlow())
     return false;
 
   const LayoutBlockFlow* block_flow = toLayoutBlockFlow(layout_box_);
+  if (!block_flow->childrenInline())
+    return false;
   LayoutObject* child = block_flow->firstChild();
   while (child) {
     if (child->isInline())