Bug 1777661 - Always expose "proxable" IDB interfaces r=twisniewski,asuth

This fixes websites using jakearchibald/idb@v3 which has been downloaded 1 million times in NPM (https://www.npmjs.com/package/idb).

The library creates proxies for those interfaces while assuming those are always globally available, and we get an `undefined identifier` error if those don't exist.

Only the version 3 is affected and v4+ is okay per my testing, but v3 is downloaded too many times to ignore.

Differential Revision: https://phabricator.services.mozilla.com/D151086

dom/base/test/chrome/file_hide_in_pbmode.js

@@ -20,16 +20,19 @@ function checkCaches(content, expected) {
 
 function checkIDB(content, expected) {
   check(content, expected, "indexedDB");
-  check(content, expected, "IDBCursor");
-  check(content, expected, "IDBDatabase");
   check(content, expected, "IDBFactory");
-  check(content, expected, "IDBIndex");
   check(content, expected, "IDBKeyRange");
-  check(content, expected, "IDBObjectStore");
   check(content, expected, "IDBOpenDBRequest");
   check(content, expected, "IDBRequest");
-  check(content, expected, "IDBTransaction");
   check(content, expected, "IDBVersionChangeEvent");
+
+  // These are always accessed by jakearchibald/idb@v3 without existence checks.
+  // https://github.com/jakearchibald/idb/blob/e1c7c44dbba38415745afc782b8e247da8c833f2/lib/idb.mjs#L152
+  check(content, true, "IDBCursor");
+  check(content, true, "IDBDatabase");
+  check(content, true, "IDBIndex");
+  check(content, true, "IDBObjectStore");
+  check(content, true, "IDBTransaction");
 }
 
 function checkSW(content, expected) {

dom/webidl/IDBCursor.webidl

@@ -14,7 +14,7 @@ enum IDBCursorDirection {
     "prevunique"
 };
 
-[Exposed=(Window,Worker), Func="IDBFactory::IsEnabled"]
+[Exposed=(Window,Worker)]
 interface IDBCursor {
     readonly    attribute (IDBObjectStore or IDBIndex) source;
 

dom/webidl/IDBDatabase.webidl

@@ -10,7 +10,7 @@
  * liability, trademark and document use rules apply.
  */
 
-[Exposed=(Window,Worker), Func="IDBFactory::IsEnabled"]
+[Exposed=(Window,Worker)]
 interface IDBDatabase : EventTarget {
     readonly    attribute DOMString          name;
     readonly    attribute unsigned long long version;

dom/webidl/IDBIndex.webidl

@@ -18,7 +18,7 @@ dictionary IDBIndexParameters {
     DOMString? locale = null;
 };
 
-[Exposed=(Window,Worker), Func="IDBFactory::IsEnabled"]
+[Exposed=(Window,Worker)]
 interface IDBIndex {
     [SetterThrows]
     attribute DOMString name;

dom/webidl/IDBObjectStore.webidl

@@ -12,7 +12,7 @@ dictionary IDBObjectStoreParameters {
     boolean                             autoIncrement = false;
 };
 
-[Exposed=(Window,Worker), Func="IDBFactory::IsEnabled"]
+[Exposed=(Window,Worker)]
 interface IDBObjectStore {
     [SetterThrows]
     attribute DOMString name;

dom/webidl/IDBTransaction.webidl

@@ -19,7 +19,7 @@ enum IDBTransactionMode {
     "versionchange"
 };
 
-[Exposed=(Window,Worker), Func="IDBFactory::IsEnabled"]
+[Exposed=(Window,Worker)]
 interface IDBTransaction : EventTarget {
     [Throws]
     readonly    attribute IDBTransactionMode mode;