Add a space between string literals and PRIuS

sync/internal_api/sync_manager_impl_unittest.cc

Index: sync/internal_api/sync_manager_impl_unittest.cc
diff --git a/sync/internal_api/sync_manager_impl_unittest.cc b/sync/internal_api/sync_manager_impl_unittest.cc
index 9a6ddee6e9b34c0f79334292137f7f5d6f55df15..5c596e0fe30faab0e3f1d18fdf60e06348da1be6 100644
--- a/sync/internal_api/sync_manager_impl_unittest.cc
+++ b/sync/internal_api/sync_manager_impl_unittest.cc
@@ -1557,12 +1557,12 @@ TEST_F(SyncManagerTest, EncryptDataTypesWithData) {
   // Next batch_size nodes are a different type and on their own.
   for (; i < 2*batch_size; ++i) {
     MakeNode(sync_manager_.GetUserShare(), SESSIONS,
-             base::StringPrintf("%"PRIuS"", i));
+             base::StringPrintf("%" PRIuS "", i));
   }
   // Last batch_size nodes are a third type that will not need encryption.
   for (; i < 3*batch_size; ++i) {
     MakeNode(sync_manager_.GetUserShare(), THEMES,
-             base::StringPrintf("%"PRIuS"", i));
+             base::StringPrintf("%" PRIuS "", i));
   }
 
   {