IndexedDB: Remove IDBIndex.storeName

IndexedDB: Remove IDBIndex.storeName
https://bugs.webkit.org/show_bug.cgi?id=86676

Reviewed by Tony Chang.

Source/WebCore:

Older versions of the IDB spec exposed IDBIndex.storeName. While it's been removed
from the IDL, the additional storage/plumbing are unnecessary clutter. Nuke it!

No new tests - no functional changes.

* Modules/indexeddb/IDBIndexBackendImpl.cpp:
(WebCore::IDBIndexBackendImpl::IDBIndexBackendImpl): Remove storeName parameter, and
const declaration on object store param. The former was used to get a non-const pointer
via indirection in openCursorInternal.
(WebCore::IDBIndexBackendImpl::openCursorInternal): Use store pointer directly, don't
look it up by name in the transaction.
* Modules/indexeddb/IDBIndexBackendImpl.h:
(WebCore::IDBIndexBackendImpl::create): Remove storeName parameters.
(IDBIndexBackendImpl): Remove storeName() method.
* Modules/indexeddb/IDBIndexBackendInterface.h:
(IDBIndexBackendInterface): Remove storeName parameter.
* Modules/indexeddb/IDBObjectStoreBackendImpl.cpp:
(WebCore::IDBObjectStoreBackendImpl::createIndex): Remove storeName parameter.
(WebCore::IDBObjectStoreBackendImpl::loadIndexes): Remove storeName parameter.

Source/WebKit/chromium:

* public/WebIDBIndex.h:
(WebIDBIndex): Can't remove from here until Chromium is updated
* src/IDBIndexBackendProxy.cpp: Removed storeName()
* src/IDBIndexBackendProxy.h: Removed storeName()
(IDBIndexBackendProxy):
* src/WebIDBIndexImpl.cpp: Removed storeName()
* src/WebIDBIndexImpl.h: Removed storeName()
(WebIDBIndexImpl):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@117512 268f45cc-cd09-0410-ab3c-d52691b4dbfc