[DevTools] Support variable height in ListControl.

third_party/WebKit/Source/devtools/front_end/platform/utilities.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 700 matching lines @@
         r = m;
     }
     return r;
   }
 });
 
 Object.defineProperty(Uint32Array.prototype, 'lowerBound', {value: Array.prototype.lowerBound});
 
 Object.defineProperty(Uint32Array.prototype, 'upperBound', {value: Array.prototype.upperBound});
 
+Object.defineProperty(Int32Array.prototype, 'lowerBound', {value: Array.prototype.lowerBound});
+
+Object.defineProperty(Int32Array.prototype, 'upperBound', {value: Array.prototype.upperBound});
+
 Object.defineProperty(Float64Array.prototype, 'lowerBound', {value: Array.prototype.lowerBound});
 
 Object.defineProperty(Array.prototype, 'binaryIndexOf', {
   /**
    * @param {!T} value
    * @param {function(!T,!S):number} comparator
    * @return {number}
    * @this {Array.<!S>}
    * @template T,S
    */
@@ skipping 698 matching lines @@
   while (leftIndex < leftKeys.length) {
     var leftKey = leftKeys[leftIndex++];
     removed.push(this.get(leftKey));
   }
   while (rightIndex < rightKeys.length) {
     var rightKey = rightKeys[rightIndex++];
     added.push(other.get(rightKey));
   }
   return {added: added, removed: removed, equal: equal};
 };