Make InlineBox::renderer() and related subclass methods return reference.

Source/core/rendering/RenderBlockLineLayout.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 238 matching lines @@
         if (lineInfo.isEmpty())
             continue;
 
         InlineBox* box = createInlineBoxForRenderer(r->m_object, false, isOnlyRun);
         r->m_box = box;
 
         ASSERT(box);
         if (!box)
             continue;
 
-        if (!rootHasSelectedChildren && box->renderer()->selectionState() != RenderObject::SelectionNone)
+        if (!rootHasSelectedChildren && box->renderer().selectionState() != RenderObject::SelectionNone)
             rootHasSelectedChildren = true;
 
         // If we have no parent box yet, or if the run is not simply a sibling,
         // then we need to construct inline boxes as necessary to properly enclose the
         // run's inline box. Segments can only be siblings at the root level, as
         // they are positioned separately.
         bool runStartsSegment = r->m_startsSegment;
 
         if (!parentBox || parentBox->renderer() != r->m_object->parent() || runStartsSegment)
             // Create new inline boxes all the way back to the appropriate insertion point.
@@ skipping 684 matching lines @@
         if (!layoutState.usesRepaintBounds())
             layoutState.setRepaintRange(logicalHeight());
         deleteLineRange(layoutState, startLine);
     }
 
     if (!layoutState.isFullLayout() && lastRootBox() && lastRootBox()->endsWithBreak()) {
         // If the last line before the start line ends with a line break that clear floats,
         // adjust the height accordingly.
         // A line break can be either the first or the last object on a line, depending on its direction.
         if (InlineBox* lastLeafChild = lastRootBox()->lastLeafChild()) {
-            RenderObject* lastObject = lastLeafChild->renderer();
+            RenderObject* lastObject = &lastLeafChild->renderer();
             if (!lastObject->isBR())
-                lastObject = lastRootBox()->firstLeafChild()->renderer();
+                lastObject = &lastRootBox()->firstLeafChild()->renderer();
             if (lastObject->isBR()) {
                 EClear clear = lastObject->style()->clear();
                 if (clear != CNONE)
                     clearFloats(clear);
             }
         }
     }
 
     layoutRunsAndFloatsInRange(layoutState, resolver, cleanLineStart, cleanLineBidiStatus, consecutiveHyphenatedLines);
     linkToEndLineIfNeeded(layoutState);
@@ skipping 439 matching lines @@
         }
     }
 
     if (m_floatingObjects && (layoutState.checkForFloatsFromLastLine() || positionNewFloats()) && lastRootBox()) {
         // In case we have a float on the last line, it might not be positioned up to now.
         // This has to be done before adding in the bottom border/padding, or the float will
         // include the padding incorrectly. -dwh
         if (layoutState.checkForFloatsFromLastLine()) {
             LayoutUnit bottomVisualOverflow = lastRootBox()->logicalBottomVisualOverflow();
             LayoutUnit bottomLayoutOverflow = lastRootBox()->logicalBottomLayoutOverflow();
-            TrailingFloatsRootInlineBox* trailingFloatsLineBox = new TrailingFloatsRootInlineBox(this);
+            TrailingFloatsRootInlineBox* trailingFloatsLineBox = new TrailingFloatsRootInlineBox(*this);
             m_lineBoxes.appendLineBox(trailingFloatsLineBox);
             trailingFloatsLineBox->setConstructed();
             GlyphOverflowAndFallbackFontsMap textBoxDataMap;
             VerticalPositionCache verticalPositionCache;
             LayoutUnit blockLogicalHeight = logicalHeight();
             trailingFloatsLineBox->alignBoxesInBlockDirection(blockLogicalHeight, textBoxDataMap, verticalPositionCache);
             trailingFloatsLineBox->setLineTopBottomPositions(blockLogicalHeight, blockLogicalHeight, blockLogicalHeight, blockLogicalHeight);
             trailingFloatsLineBox->setPaginatedLineWidth(availableLogicalWidthForContent());
             LayoutRect logicalLayoutOverflow(0, blockLogicalHeight, 1, bottomLayoutOverflow - blockLogicalHeight);
             LayoutRect logicalVisualOverflow(0, blockLogicalHeight, 1, bottomVisualOverflow - blockLogicalHeight);
@@ skipping 997 matching lines @@
     float logicalLeft = logicalLeftOffsetForLine(logicalHeight(), false);
     float availableLogicalWidth = logicalRightOffsetForLine(logicalHeight(), false) - logicalLeft;
     updateLogicalWidthForAlignment(textAlign, 0, 0, logicalLeft, totalLogicalWidth, availableLogicalWidth, 0);
 
     if (!style()->isLeftToRightDirection())
         return logicalWidth() - logicalLeft;
     return logicalLeft;
 }
 
 }