[LayoutNG] Initial version of NGBox wrapper object.

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

Index: third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.cc b/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.cc
index be7236629f3e953921dd7d25078f1b020a646e57..34d28101df0aad9ef5fe89aed4cae9520f30fc38 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.cc
@@ -12,15 +12,19 @@
 
 namespace blink {
 
-NGBlockLayoutAlgorithm::NGBlockLayoutAlgorithm(const ComputedStyle* style)
-    : m_style(style) {}
+NGBlockLayoutAlgorithm::NGBlockLayoutAlgorithm(NGBox box) : m_box(box) {}
 
 NGFragment* NGBlockLayoutAlgorithm::layout(
     const NGConstraintSpace& constraintSpace) {
-  LayoutUnit inlineSize = valueForLength(m_style->logicalWidth(),
+  LayoutUnit inlineSize = valueForLength(m_box.style().logicalWidth(),
                                          constraintSpace.inlineContainerSize());
-  LayoutUnit blockSize = valueForLength(m_style->logicalHeight(),
+  LayoutUnit blockSize = valueForLength(m_box.style().logicalHeight(),
                                         constraintSpace.blockContainerSize());
+
+  for (NGBox curr = m_box.firstChild(); curr; curr.nextSibling()) {
+    curr.layout(constraintSpace);
+  }
+
   return new NGFragment(inlineSize, blockSize, inlineSize, blockSize);
 }