788dea5 Eliminate std::string using directive (flutter/engine#7433)

engine-flutter-autoroll · engine-flutter-autoroll · commit 38ae72b01f56 · 2019-01-11T00:44:37.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-cd98f6bdb533b3164c7e8d8bd6fb98be681868d9
+788dea5ddb9426072915d24449f34519109ed97b
