Method constructor

deps/v8/tools/profview/profile-utils.js:326–338

(filter, withCategories)

class FunctionListTree {
  constructor(filter, withCategories) {
    if (withCategories) {
      let { categories, root } = buildCategoryTreeAndLookup();
      this.tree = root;
      this.categories = categories;
    } else {
      this.tree = createEmptyNode("root");
      this.categories = null;
    }

    this.codeVisited = [];
    this.filter = filter;
  }

  addStack(file, tickIndex) {
    let stack = file.ticks[tickIndex].s;