clang-formats remaining files and adds a presubmit check.

runtime/vm/object_store.h

Index: runtime/vm/object_store.h
diff --git a/runtime/vm/object_store.h b/runtime/vm/object_store.h
index 13d8117a48b6f44f8431cc4b562eb6cb5ea0678b..8be015efebc0e33998ee9556ebd5526cbfb14c3c 100644
--- a/runtime/vm/object_store.h
+++ b/runtime/vm/object_store.h
@@ -264,8 +264,8 @@ class ObjectStore {
   RawLibrary* bootstrap_library(BootstrapLibraryId index) {
     switch (index) {
 #define MAKE_CASE(CamelName, name)                                             \
-      case k##CamelName:                                                       \
-          return name##_library_;
+  case k##CamelName:                                                           \
+    return name##_library_;
 
       FOR_EACH_BOOTSTRAP_LIBRARY(MAKE_CASE)
 #undef MAKE_CASE
@@ -279,9 +279,9 @@ class ObjectStore {
   void set_bootstrap_library(BootstrapLibraryId index, const Library& value) {
     switch (index) {
 #define MAKE_CASE(CamelName, name)                                             \
-      case k##CamelName:                                                       \
-          name##_library_ = value.raw();                                       \
-          break;
+  case k##CamelName:                                                           \
+    name##_library_ = value.raw();                                             \
+    break;
 
       FOR_EACH_BOOTSTRAP_LIBRARY(MAKE_CASE)
 #undef MAKE_CASE