Make the constructor of a LayoutRect from an IntRect explicit.

Source/core/paint/InlineFlowBoxPainter.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/InlineFlowBoxPainter.h"
 
 #include "core/layout/Layer.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutInline.h"
@@ skipping 297 matching lines @@
         BoxPainter::paintNinePieceImage(*m_inlineFlowBox.boxModelObject(), paintInfo.context, imageStripPaintRect, m_inlineFlowBox.renderer().styleRef(), maskNinePieceImage, compositeOp);
     }
 
     if (pushTransparencyLayer)
         paintInfo.context->endLayer();
 }
 
 LayoutRect InlineFlowBoxPainter::roundedFrameRectClampedToLineTopAndBottomIfNeeded() const
 {
     // Pixel snap rect painting.
-    LayoutRect rect = m_inlineFlowBox.roundedFrameRect();
+    LayoutRect rect(m_inlineFlowBox.roundedFrameRect());
 
     bool noQuirksMode = m_inlineFlowBox.renderer().document().inNoQuirksMode();
     if (!noQuirksMode && !m_inlineFlowBox.hasTextChildren() && !(m_inlineFlowBox.descendantsHaveSameLineHeightAndBaseline() && m_inlineFlowBox.hasTextDescendants())) {
         const RootInlineBox& rootBox = m_inlineFlowBox.root();
         LayoutUnit logicalTop = m_inlineFlowBox.isHorizontal() ? rect.y() : rect.x();
         LayoutUnit logicalHeight = m_inlineFlowBox.isHorizontal() ? rect.height() : rect.width();
         LayoutUnit bottom = std::min(rootBox.lineBottom(), logicalTop + logicalHeight);
         logicalTop = std::max(rootBox.lineTop(), logicalTop);
         logicalHeight = bottom - logicalTop;
         if (m_inlineFlowBox.isHorizontal()) {
             rect.setY(logicalTop);
             rect.setHeight(logicalHeight);
         } else {
             rect.setX(logicalTop);
             rect.setWidth(logicalHeight);
         }
     }
     return rect;
 }
 
 } // namespace blink