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

Source/modules/indexeddb/IDBObjectStore.idl

 /*
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-// http://www.w3.org/TR/IndexedDB/#idl-def-IDBObjectStore
+// https://w3c.github.io/IndexedDB/#idl-def-IDBObjectStore
 
 [
     Exposed=(Window,Worker),
     GarbageCollected,
 ] interface IDBObjectStore {
-    readonly attribute DOMString? name;
+    readonly attribute DOMString name;

[philipj_slow, 2015/06/01 22:12:27]

Note that this does change the generated code, from v8SetReturnValueStringOrNull
to v8SetReturnValueString. (For objects like Node, however, nullability makes no
difference for readonly and return types.)

Is it possible for IDBObjectStore::name() to return a null string? If not, maybe
note that in the description so that it's clear that no observable change in
behavior is intended.

[jsbell, 2015/06/01 23:37:35]

Ah, yes, sorry - I meant to comment on that.

I noticed the ? when looking for other IDL diversions. It looks like it dates
back as far as https://bugs.webkit.org/show_bug.cgi?id=58365 where I think it
was added as a misunderstanding.

Name can never be null; calling createObjectStore(null).name will yield the
literal string "null" as the argument goes through the IDL conversion logic.

     [CallWith=ScriptState] readonly attribute any keyPath;
     readonly attribute DOMStringList indexNames;
     readonly attribute IDBTransaction transaction;
     readonly attribute boolean autoIncrement;
 
     [CallWith=ScriptState, RaisesException] IDBRequest put(any value, [Default=Undefined] optional any key);
     [CallWith=ScriptState, RaisesException] IDBRequest add(any value, [Default=Undefined] optional any key);
     [CallWith=ScriptState, ImplementedAs=deleteFunction, RaisesException] IDBRequest delete(any key);
+    [CallWith=ScriptState, RaisesException] IDBRequest clear();
     [CallWith=ScriptState, RaisesException] IDBRequest get(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);
-    [CallWith=ScriptState, RaisesException] IDBRequest clear();
+    [CallWith=ScriptState, RaisesException] IDBRequest count([Default=Undefined] optional any key);
     [CallWith=ScriptState, RaisesException] IDBRequest openCursor([Default=Undefined] optional any range, optional DOMString direction = "next");
     [CallWith=ScriptState, RaisesException, RuntimeEnabled=IndexedDBExperimental] IDBRequest openKeyCursor([Default=Undefined] optional any range, optional IDBCursorDirection direction = "next");
     [CallWith=ScriptState, RaisesException] IDBIndex createIndex(DOMString name, (DOMString or sequence<DOMString>) keyPath, optional IDBIndexParameters options);
     [RaisesException] IDBIndex index(DOMString name);
     [RaisesException] void deleteIndex(DOMString name);
-    [CallWith=ScriptState, RaisesException] IDBRequest count([Default=Undefined] optional any key);
 };