Revert of Add task location information to ExecutionContext

Source/modules/webdatabase/Database.cpp

Index: Source/modules/webdatabase/Database.cpp
diff --git a/Source/modules/webdatabase/Database.cpp b/Source/modules/webdatabase/Database.cpp
index 53c3a49b7aba8bc0292e578e309c00c5779cad40..699ba312b195b279aaebed50262d1ed283ecbcc7 100644
--- a/Source/modules/webdatabase/Database.cpp
+++ b/Source/modules/webdatabase/Database.cpp
@@ -840,7 +840,7 @@
         ASSERT(callback == originalErrorCallback);
         if (callback) {
             OwnPtr<SQLErrorData> error = SQLErrorData::create(SQLError::UNKNOWN_ERR, "database has been closed");
-            executionContext()->postTask(FROM_HERE, createSameThreadTask(&callTransactionErrorCallback, callback, error.release()));
+            executionContext()->postTask(createSameThreadTask(&callTransactionErrorCallback, callback, error.release()));
         }
     }
 }
@@ -870,7 +870,7 @@
 
 void Database::scheduleTransactionCallback(SQLTransaction* transaction)
 {
-    executionContext()->postTask(FROM_HERE, DeliverPendingCallbackTask::create(transaction));
+    executionContext()->postTask(DeliverPendingCallbackTask::create(transaction));
 }
 
 Vector<String> Database::performGetTableNames()