Dart SDK Spelling b, c, and d.

runtime/third_party/binary_size/src/template/D3SymbolTreeMap.js

 // 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.
 
 // TODO:
 // 1. Visibility functions: base on boxPadding.t, not 15
 // 2. Track a maxDisplayDepth that is user-settable:
 //    maxDepth == currentRoot.depth + maxDisplayDepth
 function D3SymbolTreeMap(mapWidth, mapHeight, levelsToShow) {
   this._mapContainer = undefined;
@@ skipping 174 matching lines @@
  */
 D3SymbolTreeMap.prototype._crunchStats = function(node) {
   var stack = [];
   stack.idCounter = 0;
   this._crunchStatsHelper(stack, node);
 }
 
 /**
  * Invoke the specified visitor function on all data elements currently shown
  * in the treemap including any and all of their children, starting at the
- * currently-displayed root and descening recursively. The function will be
+ * currently-displayed root and descending recursively. The function will be
  * passed the datum element representing each node. No traversal guarantees
  * are made.
  */
 D3SymbolTreeMap.prototype.visitFromDisplayedRoot = function(visitor) {
   this._visit(this._currentRoot, visitor);
 }
 
 /**
  * Helper function for visit functions.
  */
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     if (datum.value > smallest) { // array is already full
       result.push(datum);
       result.sort(sortFunction);
       result.pop(); // get rid of smallest element
       smallest = result[maxRecords - 1].value; // new threshold for entry
     }
   });
   result.sort(sortFunction);
   return result;
 }