IndexedDB: Add draft/proposal links for some experimental APIs in IDLs

Source/modules/indexeddb/IDBIndex.idl

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
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  * modification, are permitted provided that the following conditions
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-// http://www.w3.org/TR/IndexedDB/#idl-def-IDBIndex
+// https://w3c.github.io/IndexedDB/#idl-def-IDBIndex
 
 [
     Exposed=(Window,Worker),
     GarbageCollected
 ] interface IDBIndex {
     readonly attribute DOMString name;
     readonly attribute IDBObjectStore objectStore;
     [CallWith=ScriptState] readonly attribute any keyPath;
+    readonly attribute boolean multiEntry;
     readonly attribute boolean unique;
-    readonly attribute boolean multiEntry;
 
+    [CallWith=ScriptState, RaisesException] IDBRequest get(any key);
+    [CallWith=ScriptState, RaisesException] IDBRequest getKey(any key);
+    // TODO(cmumford): 0xFFFFFFFF is not necessary. Remove once crbug.com/335871 is fixed.
+    [CallWith=ScriptState, RaisesException, RuntimeEnabled=IndexedDBExperimental] IDBRequest getAll([Default=Undefined] optional any range, optional unsigned long maxCount = 0xFFFFFFFF);
+    // TODO(cmumford): 0xFFFFFFFF is not necessary. Remove once crbug.com/335871 is fixed.
+    [CallWith=ScriptState, RaisesException, RuntimeEnabled=IndexedDBExperimental] IDBRequest getAllKeys([Default=Undefined] optional any range, [EnforceRange] optional unsigned long maxCount = 0xFFFFFFFF);
+    [CallWith=ScriptState, RaisesException] IDBRequest count([Default=Undefined] optional any key);
     [CallWith=ScriptState, RaisesException] IDBRequest openCursor([Default=Undefined] optional any range, optional IDBCursorDirection direction = "next");
     [CallWith=ScriptState, RaisesException] IDBRequest openKeyCursor([Default=Undefined] optional any range, optional IDBCursorDirection direction = "next");
 
-    [CallWith=ScriptState, RaisesException] IDBRequest get(any key);
-    // TODO(cmumford): Standardize or eventually remove.
-    // TODO(cmumford): 0xFFFFFFFF is not necessary. Remove once crbug.com/335871 is fixed.
-    // getAll is non-standard, and therefore experimental. More info at:
-    // Documented at http://w3c.github.io/IndexedDB/#widl-IDBIndex-getAll-IDBRequest-any-query-unsigned-long-count
-    [CallWith=ScriptState, RaisesException, RuntimeEnabled=IndexedDBExperimental] IDBRequest getAll([Default=Undefined] optional any range, optional unsigned long maxCount = 0xFFFFFFFF);
-    [CallWith=ScriptState, RaisesException] IDBRequest getKey(any key);
-    // getAllKeys is not part of the spec., it is an experimental web feature
-    // TODO(cmumford): 0xFFFFFFFF is not necessary. Remove once crbug.com/335871 is fixed.
-    // Documented at https://w3c.github.io/IndexedDB/#widl-IDBIndex-getAllKeys-IDBRequest-any-query-unsigned-long-count
-    [CallWith=ScriptState, RaisesException, RuntimeEnabled=IndexedDBExperimental] IDBRequest getAllKeys([Default=Undefined] optional any range, [EnforceRange] optional unsigned long maxCount = 0xFFFFFFFF);
-    [CallWith=ScriptState, RaisesException] IDBRequest count([Default=Undefined] optional any key);
 };