Remove unnecessary repaint from line layout and cleanup logic

Source/core/rendering/RenderBlockFlow.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003-2013 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ skipping 480 matching lines @@
     RootInlineBox* constructLine(BidiRunList<BidiRun>&, const LineInfo&);
     void setMarginsForRubyRun(BidiRun*, RenderRubyRun*, RenderObject*, const LineInfo&);
     void computeInlineDirectionPositionsForLine(RootInlineBox*, const LineInfo&, BidiRun* firstRun, BidiRun* trailingSpaceRun, bool reachedEnd, GlyphOverflowAndFallbackFontsMap&, VerticalPositionCache&, WordMeasurements&);
     BidiRun* computeInlineDirectionPositionsForSegment(RootInlineBox*, const LineInfo&, ETextAlign, float& logicalLeft,
         float& availableLogicalWidth, BidiRun* firstRun, BidiRun* trailingSpaceRun, GlyphOverflowAndFallbackFontsMap& textBoxDataMap, VerticalPositionCache&, WordMeasurements&);
     void computeBlockDirectionPositionsForLine(RootInlineBox*, BidiRun*, GlyphOverflowAndFallbackFontsMap&, VerticalPositionCache&);
     BidiRun* handleTrailingSpaces(BidiRunList<BidiRun>&, BidiContext*);
     void appendFloatingObjectToLastLine(FloatingObject*);
     // Helper function for layoutInlineChildren()
     RootInlineBox* createLineBoxesFromBidiRuns(unsigned bidiLevel, BidiRunList<BidiRun>&, const InlineIterator& end, LineInfo&, VerticalPositionCache&, BidiRun* trailingSpaceRun, WordMeasurements&);
-    void layoutRunsAndFloats(LineLayoutState&, bool hasInlineChild);
+    void layoutRunsAndFloats(LineLayoutState&);
     const InlineIterator& restartLayoutRunsAndFloatsInRange(LayoutUnit oldLogicalHeight, LayoutUnit newLogicalHeight,  FloatingObject* lastFloatFromPreviousLine, InlineBidiResolver&,  const InlineIterator&);
     void layoutRunsAndFloatsInRange(LineLayoutState&, InlineBidiResolver&, const InlineIterator& cleanLineStart, const BidiStatus& cleanLineBidiStatus, unsigned consecutiveHyphenatedLines);
     void updateShapeAndSegmentsForCurrentLine(ShapeInsideInfo*&, const LayoutSize&, LineLayoutState&);
     void updateShapeAndSegmentsForCurrentLineInFlowThread(ShapeInsideInfo*&, LineLayoutState&);
     bool adjustLogicalLineTopAndLogicalHeightIfNeeded(ShapeInsideInfo*, LayoutUnit, LineLayoutState&, InlineBidiResolver&, FloatingObject*, InlineIterator&, WordMeasurements&);
     void linkToEndLineIfNeeded(LineLayoutState&);
     static void repaintDirtyFloats(Vector<FloatWithRect>& floats);
     void checkFloatsInCleanLine(RootInlineBox*, Vector<FloatWithRect>&, size_t& floatIndex, bool& encounteredNewFloat, bool& dirtiedByFloat);
     RootInlineBox* determineStartPosition(LineLayoutState&, InlineBidiResolver&);
     void determineEndPosition(LineLayoutState&, RootInlineBox* startBox, InlineIterator& cleanLineStart, BidiStatus& cleanLineBidiStatus);
     bool checkPaginationAndFloatsAtEndLine(LineLayoutState&);
     bool matchedEndLine(LineLayoutState&, const InlineBidiResolver&, const InlineIterator& endLineStart, const BidiStatus& endLineStatus);
     void deleteEllipsisLineBoxes();
     void checkLinesForTextOverflow();
     // Positions new floats and also adjust all floats encountered on the line if any of them
     // have to move to the next page/column.
     bool positionNewFloatOnLine(FloatingObject* newFloat, FloatingObject* lastFloatFromPreviousLine, LineInfo&, LineWidth&);
 
 
 // END METHODS DEFINED IN RenderBlockLineLayout
 
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBlockFlow, isRenderBlockFlow());
 
 } // namespace WebCore
 
 #endif // RenderBlockFlow_h