Use references in RenderBlock and RenderBlockFlow methods

Source/core/rendering/RenderBlockLineLayout.cpp

Index: Source/core/rendering/RenderBlockLineLayout.cpp
diff --git a/Source/core/rendering/RenderBlockLineLayout.cpp b/Source/core/rendering/RenderBlockLineLayout.cpp
index c767109eceb31cf16d096eb33c9f35b7255198c2..1facbb200aab15e871b84ddfea7ac0837ba8052a 100644
--- a/Source/core/rendering/RenderBlockLineLayout.cpp
+++ b/Source/core/rendering/RenderBlockLineLayout.cpp
@@ -364,8 +364,8 @@ void RenderBlockFlow::setMarginsForRubyRun(BidiRun* run, RenderRubyRun* renderer
         }
     }
     renderer->getOverhang(lineInfo.isFirstLine(), renderer->style()->isLeftToRightDirection() ? previousObject : nextObject, renderer->style()->isLeftToRightDirection() ? nextObject : previousObject, startOverhang, endOverhang);
-    setMarginStartForChild(renderer, -startOverhang);
-    setMarginEndForChild(renderer, -endOverhang);
+    setMarginStartForChild(*renderer, -startOverhang);
+    setMarginEndForChild(*renderer, -endOverhang);
 }
 
 static inline void setLogicalWidthForTextRun(RootInlineBox* lineBox, BidiRun* run, RenderText* renderer, float xPos, const LineInfo& lineInfo,
@@ -622,8 +622,8 @@ BidiRun* RenderBlockFlow::computeInlineDirectionPositionsForSegment(RootInlineBo
                 RenderBox* renderBox = toRenderBox(r->m_object);
                 if (renderBox->isRubyRun())
                     setMarginsForRubyRun(r, toRenderRubyRun(renderBox), previousObject, lineInfo);
-                r->m_box->setLogicalWidth(logicalWidthForChild(renderBox).toFloat());
-                totalLogicalWidth += marginStartForChild(renderBox) + marginEndForChild(renderBox);
+                r->m_box->setLogicalWidth(logicalWidthForChild(*renderBox).toFloat());
+                totalLogicalWidth += marginStartForChild(*renderBox) + marginEndForChild(*renderBox);
                 needsWordSpacing = true;
             }
         }
@@ -1014,7 +1014,7 @@ void RenderBlockFlow::linkToEndLineIfNeeded(LineLayoutState& layoutState)
                         FloatingObject* floatingObject = insertFloatingObject(*f);
                         ASSERT(!floatingObject->originatingLine());
                         floatingObject->setOriginatingLine(line);
-                        setLogicalHeight(logicalTopForChild(*f) - marginBeforeForChild(*f) + delta);
+                        setLogicalHeight(logicalTopForChild(**f) - marginBeforeForChild(**f) + delta);
                         positionNewFloats();
                     }
                 }
@@ -1561,7 +1561,7 @@ void RenderBlockFlow::layoutInlineChildren(bool relayoutChildren, LayoutUnit& pa
             if (o->isReplaced() || o->isFloating() || o->isOutOfFlowPositioned()) {
                 RenderBox* box = toRenderBox(o);
 
-                updateBlockChildDirtyBitsBeforeLayout(relayoutChildren, box);
+                updateBlockChildDirtyBitsBeforeLayout(relayoutChildren, *box);
 
                 if (o->isOutOfFlowPositioned())
                     o->containingBlock()->insertPositionedObject(box);
@@ -1738,7 +1738,7 @@ RootInlineBox* RenderBlockFlow::determineStartPosition(LineLayoutState& layoutSt
                     FloatingObject* floatingObject = insertFloatingObject(*f);
                     ASSERT(!floatingObject->originatingLine());
                     floatingObject->setOriginatingLine(line);
-                    setLogicalHeight(logicalTopForChild(*f) - marginBeforeForChild(*f));
+                    setLogicalHeight(logicalTopForChild(**f) - marginBeforeForChild(**f));
                     positionNewFloats();
                     ASSERT(layoutState.floats()[numCleanFloats].object == *f);
                     numCleanFloats++;
@@ -2017,7 +2017,7 @@ bool RenderBlockFlow::positionNewFloatOnLine(FloatingObject* newFloat, FloatingO
         if (logicalTopForFloat(floatingObject) == logicalHeight() + lineInfo.floatPaginationStrut()) {
             floatingObject->setPaginationStrut(paginationStrut + floatingObject->paginationStrut());
             RenderBox* floatBox = floatingObject->renderer();
-            setLogicalTopForChild(floatBox, logicalTopForChild(floatBox) + marginBeforeForChild(floatBox) + paginationStrut);
+            setLogicalTopForChild(floatBox, logicalTopForChild(*floatBox) + marginBeforeForChild(*floatBox) + paginationStrut);
             if (floatBox->isRenderBlock())
                 floatBox->forceChildLayout();
             else