Disallow cast/implicit conversion from LayoutUnit to int/unsigned

third_party/WebKit/Source/core/paint/ViewPainter.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 "core/paint/ViewPainter.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/layout/LayoutBox.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/BlockPainter.h"
 #include "core/paint/BoxPainter.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/RuntimeEnabledFeatures.h"
 
 namespace blink {
 
 void ViewPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     // If we ever require layout but receive a paint anyway, something has gone horribly wrong.
-    ASSERT(!m_layoutView.needsLayout());
+    DCHECK(!m_layoutView.needsLayout());
     // LayoutViews should never be called to paint with an offset not on device pixels.
-    ASSERT(LayoutPoint(IntPoint(paintOffset.x(), paintOffset.y())) == paintOffset);
+    DCHECK(LayoutPoint(IntPoint(paintOffset.x().toInt(), paintOffset.y().toInt())) == paintOffset);
 
     const FrameView* frameView = m_layoutView.frameView();
     if (frameView->shouldThrottleRendering())
         return;
 
     m_layoutView.paintObject(paintInfo, paintOffset);
     BlockPainter(m_layoutView).paintOverflowControlsIfNeeded(paintInfo, paintOffset);
 }
 
 void ViewPainter::paintBoxDecorationBackground(const PaintInfo& paintInfo)
@@ skipping 115 matching lines @@
             BoxPainter::paintFillLayer(m_layoutView, paintInfo, Color(), **it, LayoutRect(paintRect), BackgroundBleedNone);
             context.restore();
         }
     }
 
     if (shouldDrawBackgroundInSeparateBuffer)
         context.endLayer();
 }
 
 } // namespace blink