DatabaseManager::terminateDatabaseThread should handle multiple DatabaseContexts.

Source/modules/webdatabase/DatabaseManager.cpp

Index: Source/modules/webdatabase/DatabaseManager.cpp
diff --git a/Source/modules/webdatabase/DatabaseManager.cpp b/Source/modules/webdatabase/DatabaseManager.cpp
index 5854cee9cf4a0be9c8ea672247ba479677eee7cc..3d59cc1f68c79b1430277df9e27a30a8dc587737 100644
--- a/Source/modules/webdatabase/DatabaseManager.cpp
+++ b/Source/modules/webdatabase/DatabaseManager.cpp
@@ -59,9 +59,8 @@ void DatabaseManager::terminateDatabaseThread()
     ASSERT(isMainThread());
     if (!s_databaseManager || s_databaseManager->m_contextMap.isEmpty())

[haraken, 2015/02/12 08:36:53]

Now you won't need the m_contextMap.isEmpty() check.

[tkent, 2015/02/12 08:39:50]

Done.

         return;
-    // We have at most one DatabaseContext, which is for the main thread.
-    ASSERT(s_databaseManager->m_contextMap.size() == 1);
-    (*s_databaseManager->m_contextMap.values().begin())->stopDatabases();
+    for (const Member<DatabaseContext>& context : s_databaseManager->m_contextMap.values())
+        context->stopDatabases();
 }
 
 DatabaseManager::DatabaseManager()