Style cleanup in preparation for auto-linting base/.

base/spin_wait.h

Index: base/spin_wait.h
diff --git a/base/spin_wait.h b/base/spin_wait.h
index 36ae083f20a278bcfb73f7e358e2a407fa115f92..d6571b74aaefc49ce67053e3e2454375f9c2dd9b 100644
--- a/base/spin_wait.h
+++ b/base/spin_wait.h
@@ -37,7 +37,7 @@
 #define SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(delta, expression) do { \
   base::Time start = base::Time::Now(); \
   const base::TimeDelta kTimeout = delta; \
-    while(!(expression)) { \
+    while (!(expression)) { \
       if (kTimeout < base::Time::Now() - start) { \
       EXPECT_LE((base::Time::Now() - start).InMilliseconds(), \
                 kTimeout.InMilliseconds()) << "Timed out"; \
@@ -45,7 +45,6 @@
       } \
       PlatformThread::Sleep(50); \
     } \
-  } \
-  while(0)
+  } while (0)
 
 #endif  // BASE_SPIN_WAIT_H__