https://bugs.webkit.org/show_bug.cgi?id=102730

Reviewed by Darin Fisher.

Source/WebCore:

Stub out and support passing a 64-bit transaction id
so the frontend can refer to transactions by id rather than
a proxy object or a direct pointer reference. This will ultimately
loosen ownership and lifetime of transactions from the frontend
and backend.

No new tests, this is just part of a refactor.

* Modules/indexeddb/IDBDatabase.cpp:
* Modules/indexeddb/IDBDatabaseBackendImpl.cpp:
(WebCore):
(WebCore::IDBDatabaseBackendImpl::transaction):
(WebCore::IDBDatabaseBackendImpl::createTransaction):
* Modules/indexeddb/IDBDatabaseBackendImpl.h:
(IDBDatabaseBackendImpl):
* Modules/indexeddb/IDBDatabaseBackendInterface.h:
(IDBDatabaseBackendInterface):
* Modules/indexeddb/IDBTransactionBackendImpl.cpp:
(WebCore::IDBTransactionBackendImpl::create):
(WebCore::IDBTransactionBackendImpl::IDBTransactionBackendImpl):
* Modules/indexeddb/IDBTransactionBackendImpl.h:
(IDBTransactionBackendImpl):
(WebCore::IDBTransactionBackendImpl::id):

Source/WebKit/chromium:

Add support for new createTransaction() method in both sides
of the WebKit API.

* public/WebIDBDatabase.h:
(WebIDBDatabase):
(WebKit::WebIDBDatabase::createTransaction):
* src/IDBDatabaseBackendProxy.cpp:
(WebKit):
(WebKit::IDBDatabaseBackendProxy::createTransaction):
* src/IDBDatabaseBackendProxy.h:
(IDBDatabaseBackendProxy):
* src/WebIDBDatabaseImpl.cpp:
(WebKit::WebIDBDatabaseImpl::createTransaction):
(WebKit):
* src/WebIDBDatabaseImpl.h:
(WebIDBDatabaseImpl):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@135856 268f45cc-cd09-0410-ab3c-d52691b4dbfc