SP: Optimize calculating cull rects for inline text and ellipsis boxes.

Source/core/paint/EllipsisBoxPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/paint/EllipsisBoxPainter.h"
 
 #include "core/layout/TextRunConstructor.h"
 #include "core/layout/line/EllipsisBox.h"
 #include "core/layout/line/RootInlineBox.h"
@@ skipping 11 matching lines @@
 }
 
 void EllipsisBoxPainter::paintEllipsis(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, const ComputedStyle& style)
 {
     bool isPrinting = m_ellipsisBox.layoutObject().document().printing();
     bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && m_ellipsisBox.selectionState() != LayoutObject::SelectionNone;
 
     LayoutRect paintRect(m_ellipsisBox.logicalFrameRect());
     if (haveSelection)
         paintRect.unite(LayoutRect(m_ellipsisBox.selectionRect()));
-    paintRect = m_ellipsisBox.logicalRectToPhysicalRect(paintRect);
+    m_ellipsisBox.logicalRectToPhysicalRect(paintRect);
     paintRect.moveBy(paintOffset);
 
     GraphicsContext* context = paintInfo.context;
     DrawingRecorder recorder(*context, m_ellipsisBox, DisplayItem::paintPhaseToDrawingType(paintInfo.phase), paintRect);
     if (recorder.canUseCachedDrawing())
         return;
 
     LayoutPoint boxOrigin = m_ellipsisBox.locationIncludingFlipping();
     boxOrigin.moveBy(paintOffset);
     LayoutRect boxRect(boxOrigin, LayoutSize(m_ellipsisBox.logicalWidth(), m_ellipsisBox.virtualLogicalHeight()));
@@ skipping 36 matching lines @@
     LayoutUnit top = m_ellipsisBox.root().selectionTop();
     LayoutUnit h = m_ellipsisBox.root().selectionHeight();
     const int deltaY = roundToInt(m_ellipsisBox.layoutObject().styleRef().isFlippedLinesWritingMode() ? selectionBottom - m_ellipsisBox.logicalBottom() : m_ellipsisBox.logicalTop() - top);
     const LayoutPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY);
     LayoutRect clipRect(localOrigin, LayoutSize(m_ellipsisBox.logicalWidth(), h));
     context->clip(clipRect);
     context->drawHighlightForText(font, constructTextRun(&m_ellipsisBox.layoutObject(), font, m_ellipsisBox.ellipsisStr(), style, TextRun::AllowTrailingExpansion), FloatPoint(localOrigin), h, c);
 }
 
 } // namespace blink