Merge 120828 - [Chromium] IndexedDB: Don't close database if pending connections are in flight

Merge 120828 - [Chromium] IndexedDB: Don't close database if pending connections are in flight
https://bugs.webkit.org/show_bug.cgi?id=89512

Source/WebCore:

Add a counter tracking connections between the two phases, which is used along with
the completed connection count to determine the total number of connections.

Reviewed by Tony Chang.

Test: webkit_unit_tests --gtest_filter='IDBDatabaseBackendTest.ConnectionLifecycle'

* Modules/indexeddb/IDBDatabaseBackendImpl.cpp:
(WebCore::IDBDatabaseBackendImpl::IDBDatabaseBackendImpl):
(WebCore::IDBDatabaseBackendImpl::setVersion):
(WebCore::IDBDatabaseBackendImpl::connectionCount):
(WebCore):
(WebCore::IDBDatabaseBackendImpl::processPendingCalls):
(WebCore::IDBDatabaseBackendImpl::transaction):
(WebCore::IDBDatabaseBackendImpl::registerFrontendCallbacks):
(WebCore::IDBDatabaseBackendImpl::openConnection):
(WebCore::IDBDatabaseBackendImpl::close):
* Modules/indexeddb/IDBDatabaseBackendImpl.h:
(IDBDatabaseBackendImpl):
* Modules/indexeddb/IDBFactoryBackendImpl.cpp:
(WebCore::IDBFactoryBackendImpl::openInternal):
* inspector/InspectorIndexedDBAgent.cpp:
(WebCore):

Source/WebKit/chromium:

Reviewed by Tony Chang.

* tests/IDBDatabaseBackendTest.cpp:
(MockIDBCallbacks):
(WebCore::MockIDBCallbacks::create):
(WebCore::MockIDBCallbacks::MockIDBCallbacks):
(WebCore):
(FakeIDBDatabaseCallbacks):
(WebCore::FakeIDBDatabaseCallbacks::create):
(WebCore::FakeIDBDatabaseCallbacks::FakeIDBDatabaseCallbacks):
(WebCore::TEST):


TBR=jsbell@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=120958