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

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

Index: third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js b/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
index 29059af4b4d6c24729cc230f164bb6f5b32662df..0934eb58d46c425d2262986b249cd814dea0f0a0 100644
--- a/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
+++ b/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
@@ -612,6 +612,7 @@ Profiler.ProfileSidebarTreeElement = class extends UI.TreeElement {
     this._dataDisplayDelegate = dataDisplayDelegate;
     this.profile = profile;
     profile.addEventListener(Profiler.ProfileHeader.Events.UpdateStatus, this._updateStatus, this);
+    profile.addEventListener(Profiler.ProfileHeader.Events.ProfileTitleChanged, this._updateTitle, this);
     if (profile.canSaveToFile())
       this._createSaveLink();
     else
@@ -641,9 +642,49 @@ Profiler.ProfileSidebarTreeElement = class extends UI.TreeElement {
       this.listItemElement.classList.toggle('wait', statusUpdate.wait);
   }
 
+  /**
+   * @override
+   * @param {!Event} event
+   * @return {boolean}
+   */
+  ondblclick(event) {
+    if (!this._editing)
+      this._startEditing(/** @type {!Element} */ (event.target));
+    return false;
+  }
+
+  /**
+   * @param {!Element} eventTarget
+   */
+  _startEditing(eventTarget) {
+    var container = eventTarget.enclosingNodeOrSelfWithClass('title');
+    if (!container)
+      return;
+    var config = new UI.InplaceEditor.Config(this._editingCommitted.bind(this), this._editingCancelled.bind(this));
+    this._editing = UI.InplaceEditor.startEditing(container, config);
+  }
+
+  /**
+   * @param {!Element} container
+   * @param {string} newTitle
+   */
+  _editingCommitted(container, newTitle) {
+    delete this._editing;
+    this.profile.setTitle(newTitle);
+  }
+
+  _editingCancelled() {
+    delete this._editing;
+  }
+
+  _updateTitle() {
+    this._titleElement.textContent = this.profile.title;

[alph, 2017/07/11 21:24:58]

You still do not need this. The event is coming from setTitle which is called by
editingCommited that already has the title updated.

[diana.suvorova, 2017/07/11 21:47:50]

This is great! ProfileTitleChanged listener is gone as well. 

+  }
+
   dispose() {
     this.profile.removeEventListener(Profiler.ProfileHeader.Events.UpdateStatus, this._updateStatus, this);
     this.profile.removeEventListener(Profiler.ProfileHeader.Events.ProfileReceived, this._onProfileReceived, this);
+    this.profile.removeEventListener(Profiler.ProfileHeader.Events.ProfileTitleChanged, this._updateTitle, this);
   }
 
   /**