Avoid duplicating the BleedAvoidanceIsClipping function in Blink paint

third_party/WebKit/Source/core/paint/BoxBorderPainter.cpp

 // Copyright 2015 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/BoxBorderPainter.h"
 
 #include <algorithm>
 #include "core/paint/BoxPainter.h"
 #include "core/paint/ObjectPainter.h"
 #include "core/paint/PaintInfo.h"
@@ skipping 316 matching lines @@
         context.FillDRRect(adjusted_outer, inner, color);
         break;
       }
     // fall through
     default:
       context.FillDRRect(outer, inner, color);
       break;
   }
 }
 
-bool BleedAvoidanceIsClipping(BackgroundBleedAvoidance bleed_avoidance) {
-  return bleed_avoidance == kBackgroundBleedClipOnly ||
-         bleed_avoidance == kBackgroundBleedClipLayer;
-}
-
 // The LUTs below assume specific enum values.
 static_assert(kBorderStyleNone == 0, "unexpected EBorderStyle value");
 static_assert(kBorderStyleHidden == 1, "unexpected EBorderStyle value");
 static_assert(kBorderStyleInset == 2, "unexpected EBorderStyle value");
 static_assert(kBorderStyleGroove == 3, "unexpected EBorderStyle value");
 static_assert(kBorderStyleOutset == 4, "unexpected EBorderStyle value");
 static_assert(kBorderStyleRidge == 5, "unexpected EBorderStyle value");
 static_assert(kBorderStyleDotted == 6, "unexpected EBorderStyle value");
 static_assert(kBorderStyleDashed == 7, "unexpected EBorderStyle value");
 static_assert(kBorderStyleSolid == 8, "unexpected EBorderStyle value");
@@ skipping 1113 matching lines @@
     FindIntersection(edge_quad[2], edge_quad[3], bound_quad1, bound_quad2,
                      clipping_quad[2]);
     clipping_quad[2] -= extension_offset;
     clipping_quad[3] = edge_quad[3] - extension_offset;
 
     ClipQuad(graphics_context, clipping_quad, second_miter == kSoftMiter);
   }
 }
 
 }  // namespace blink