Remove some unnecessary and precision-losing pixel snapping code.

Source/core/paint/ObjectPainter.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/ObjectPainter.h"
 
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutTheme.h"
 #include "core/layout/PaintInfo.h"
@@ skipping 32 matching lines @@
         }
         return;
     }
 
     if (styleToUse.outlineStyle() == BNONE)
         return;
 
     IntRect inner = pixelSnappedIntRect(paintRect);
     inner.inflate(styleToUse.outlineOffset());
 
-    IntRect outer = pixelSnappedIntRect(inner);
+    IntRect outer = inner;
     LayoutUnit outlineWidth = styleToUse.outlineWidth();
     outer.inflate(outlineWidth);
 
     // FIXME: This prevents outlines from painting inside the object. See bug 12042
     if (outer.isEmpty())
         return;
 
     EBorderStyle outlineStyle = styleToUse.outlineStyle();
     Color outlineColor = m_layoutObject.resolveColor(styleToUse, CSSPropertyOutlineColor);
 
@@ skipping 277 matching lines @@
         quad[1] = FloatPoint(x1, y2 - std::max(adjacentWidth2, 0));
         quad[2] = FloatPoint(x2, y2 - std::max(-adjacentWidth2, 0));
         quad[3] = FloatPoint(x2, y1 + std::max(-adjacentWidth1, 0));
         break;
     }
 
     graphicsContext->fillPolygon(4, quad, color, antialias);
 }
 
 } // namespace blink