DevTools: Make Array.remove O(N).

Source/devtools/front_end/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 362 matching lines @@
 Object.defineProperty(Array.prototype, "remove",
 {
     /**
      * @param {!T} value
      * @param {boolean=} firstOnly
      * @this {Array.<!T>}
      * @template T
      */
     value: function(value, firstOnly)
     {
+        var index = this.indexOf(value);
+        if (index === -1)
+            return;
         if (firstOnly) {
-            var index = this.indexOf(value);
-            if (index !== -1)
-                this.splice(index, 1);
+            this.splice(index, 1);
             return;
         }
-
-        for (var i = 0; i < this.length; ++i) {
-            if (this[i] === value)
-                this.splice(i--, 1);
+        for (var i = index + 1, n = this.length; i < n; ++i) {
+            if (this[i] !== value)
+                this[index++] = this[i];
         }
+        this.length = index;
     }
 });
 
 Object.defineProperty(Array.prototype, "keySet",
 {
     /**
      * @return {!Object.<string, boolean>}
      * @this {Array.<*>}
      */
     value: function()
@@ skipping 1123 matching lines @@
             this._outgoingCallback();
     }
 }
 
 /**
  * @param {*} value
  */
 function suppressUnused(value)
 {
 }