[WIP] make GURL::path() return a StringPiece

components/sync/engine_impl/sync_manager_impl.cc

Index: components/sync/engine_impl/sync_manager_impl.cc
diff --git a/components/sync/engine_impl/sync_manager_impl.cc b/components/sync/engine_impl/sync_manager_impl.cc
index 06720a0318cd330c99eae2c460fe70087c2c9989..7b2389e99eacb3e76fcec64e4c16fc1b08a42e67 100644
--- a/components/sync/engine_impl/sync_manager_impl.cc
+++ b/components/sync/engine_impl/sync_manager_impl.cc
@@ -296,7 +296,7 @@ void SyncManagerImpl::Init(InitArgs* args) {
 #endif  // defined(OS_WIN)
   } else {
     connection_manager_ = base::MakeUnique<SyncServerConnectionManager>(
-        args->service_url.host() + args->service_url.path(),
+        args->service_url.host() + args->service_url.path().as_string(),
         args->service_url.EffectiveIntPort(),
         args->service_url.SchemeIsCryptographic(), args->post_factory.release(),
         args->cancelation_signal);