Create LineLayout api

Source/core/layout/line/LineBreaker.cpp

Index: Source/core/layout/line/LineBreaker.cpp
diff --git a/Source/core/layout/line/LineBreaker.cpp b/Source/core/layout/line/LineBreaker.cpp
index 4d4d316509ac0da65d42bb0805d3a92475a4f88f..8079a8243248456ff1d8a8509ece7c1d077efe4f 100644
--- a/Source/core/layout/line/LineBreaker.cpp
+++ b/Source/core/layout/line/LineBreaker.cpp
@@ -39,7 +39,7 @@ void LineBreaker::skipLeadingWhitespace(InlineBidiResolver& resolver, LineInfo&
                 lineInfo.incrementRunsFromLeadingWhitespace();
             }
         } else if (object->isFloating()) {
-            m_block->positionNewFloatOnLine(*m_block->insertFloatingObject(*toLayoutBox(object)), lastFloatFromPreviousLine, lineInfo, width);
+            m_block.positionNewFloatOnLine(*m_block.insertFloatingObject(*toLayoutBox(object)), lastFloatFromPreviousLine, lineInfo, width);
         }
         resolver.position().increment(&resolver);
     }
@@ -63,7 +63,7 @@ InlineIterator LineBreaker::nextLineBreak(InlineBidiResolver& resolver, LineInfo
 
     bool appliedStartWidth = resolver.position().offset() > 0;
 
-    LineWidth width(*m_block, lineInfo.isFirstLine(), requiresIndent(lineInfo.isFirstLine(), lineInfo.previousLineBrokeCleanly(), m_block->styleRef()));
+    LineWidth width(m_block, lineInfo.isFirstLine(), requiresIndent(lineInfo.isFirstLine(), lineInfo.previousLineBrokeCleanly(), m_block.styleRef()));
 
     skipLeadingWhitespace(resolver, lineInfo, lastFloatFromPreviousLine, width);