DevTools: Move BezierEditor from elements/ to ui/

third_party/WebKit/Source/devtools/front_end/ui/BezierUI.js

 // Copyright (c) 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.
 
 /**
  * @constructor
  * @param {number} width
  * @param {number} height
  * @param {number} marginTop
  * @param {number} controlPointRadius
@@ skipping 107 matching lines @@
         var current = bezier.evaluateAt(t);
         var slope = (current.y - prev.y) / (current.x - prev.x);
         var weightedX = prev.x * (1 - t) + current.x * t;
         slope = Math.tanh(slope / 1.5); // Normalise slope
         pathBuilder = pathBuilder.concat(["L", (weightedX * width).toFixed(2), (height - slope * height).toFixed(2) ]);
         prev = current;
     }
     pathBuilder = pathBuilder.concat(["L", width.toFixed(2), height, "Z"]);
     path.setAttribute("d", pathBuilder.join(" "));
 }