Bug 1886239 - Remove obsolete prompting code. r=leftmostcat

The pref removal is a port of bug 1705440. Everything else is dead code.

Differential Revision: https://phabricator.services.mozilla.com/D205141

--HG--
extra : amend_source : 2c201c8ffbba571c54b3ffac250c321fa056efd6

mail/actors/PromptParent.sys.mjs

@@ -9,88 +9,7 @@ ChromeUtils.defineESModuleGetters(lazy, {
   PromptUtils: "resource://gre/modules/PromptUtils.sys.mjs",
 });
 
-/**
- * @typedef {object} Prompt
- * @property {Function} resolver
- *           The resolve function to be called with the data from the Prompt
- *           after the user closes it.
- * @property {object} tabModalPrompt
- *           The TabModalPrompt being shown to the user.
- */
-
-/**
- * gBrowserPrompts weakly maps BrowsingContexts to a Map of their currently
- * active Prompts.
- *
- * @type {WeakMap<BrowsingContext, Prompt>}
- */
-const gBrowserPrompts = new WeakMap();
-
 export class PromptParent extends JSWindowActorParent {
-  didDestroy() {
-    // In the event that the subframe or tab crashed, make sure that
-    // we close any active Prompts.
-    this.forceClosePrompts();
-  }
-
-  /**
-   * Registers a new Prompt to be tracked for a particular BrowsingContext.
-   * We need to track a Prompt so that we can, for example, force-close the
-   * TabModalPrompt if the originating subframe or tab unloads or crashes.
-   *
-   * @param {object} tabModalPrompt
-   *        The TabModalPrompt that will be shown to the user.
-   * @param {string} id
-   *        A unique ID to differentiate multiple Prompts coming from the same
-   *        BrowsingContext.
-   * @returns {Promise}
-   * @resolves {object}
-   *           Resolves with the arguments returned from the TabModalPrompt when it
-   *           is dismissed.
-   */
-  registerPrompt(tabModalPrompt, id) {
-    let prompts = gBrowserPrompts.get(this.browsingContext);
-    if (!prompts) {
-      prompts = new Map();
-      gBrowserPrompts.set(this.browsingContext, prompts);
-    }
-
-    const promise = new Promise(resolve => {
-      prompts.set(id, {
-        tabModalPrompt,
-        resolver: resolve,
-      });
-    });
-
-    return promise;
-  }
-
-  /**
-   * Removes a Prompt for a BrowsingContext with a particular ID from the registry.
-   * This needs to be done to avoid leaking <xul:browser>'s.
-   *
-   * @param {string} id
-   *        A unique ID to differentiate multiple Prompts coming from the same
-   *        BrowsingContext.
-   */
-  unregisterPrompt(id) {
-    const prompts = gBrowserPrompts.get(this.browsingContext);
-    if (prompts) {
-      prompts.delete(id);
-    }
-  }
-
-  /**
-   * Programmatically closes all Prompts for the current BrowsingContext.
-   */
-  forceClosePrompts() {
-    const prompts = gBrowserPrompts.get(this.browsingContext) || [];
-
-    for (const [, prompt] of prompts) {
-      prompt.tabModalPrompt && prompt.tabModalPrompt.abortPrompt();
-    }
-  }
-
   receiveMessage(message) {
     const args = message.data;
 

mail/app/profile/all-thunderbird.js

@@ -1326,7 +1326,6 @@ pref("mail.minimizeToTray", false);
 #endif
 
 pref("prompts.defaultModalType", 3);
-pref("prompts.contentPromptSubDialog", false);
 
 // The URL for the privacy policy related to recommended extensions.
 pref("extensions.recommendations.privacyPolicyUrl", "https://www.mozilla.org/en-US/privacy/thunderbird/#addons");