DevTools -> Memory Tab -> Allowing to edit a title of a heap snapshot

third_party/WebKit/Source/devtools/front_end/profiler/ProfileHeader.js

 // Copyright 2017 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.
 
 /**
  * @unrestricted
  */
 Profiler.ProfileHeader = class extends Common.Object {
   /**
    * @param {!Profiler.ProfileType} profileType
    * @param {string} title
    */
   constructor(profileType, title) {
     super();
     this._profileType = profileType;
     this.title = title;
     this.uid = profileType.incrementProfileUid();
     this._fromFile = false;
   }
 
   /**
+   * @param {string} title
+   */
+  setTitle(title) {
+    this.title = title;
+    this.dispatchEventToListeners(Profiler.ProfileHeader.Events.ProfileTitleChanged, this);
+  }
+
+  /**
    * @return {!Profiler.ProfileType}
    */
   profileType() {
     return this._profileType;
   }
 
   /**
    * @param {?string} subtitle
    * @param {boolean=} wait
    */
@@ skipping 69 matching lines @@
     /** @type {?string} */
     this.subtitle = subtitle;
     /** @type {boolean|undefined} */
     this.wait = wait;
   }
 };
 
 /** @enum {symbol} */
 Profiler.ProfileHeader.Events = {
   UpdateStatus: Symbol('UpdateStatus'),
-  ProfileReceived: Symbol('ProfileReceived')
+  ProfileReceived: Symbol('ProfileReceived'),
+  ProfileTitleChanged: Symbol('ProfileTitleChanged')
 };