Update clang-format rules

Summary: Spent a couple hours customizing the clang-format rules to better match the desired code style.

Reviewed By: IanChilds

Differential Revision: D3714510

fbshipit-source-id: f6d0436346416aab023aacbedd70ea189e583e8d

benchmarks/CSSBenchmark.c

@@ -9,17 +9,21 @@
 
 #include "CSSBenchmark.h"
 
-#include <time.h>
 #include <CSSLayout/CSSLayout.h>
+#include <time.h>
 
 // Measure functions can be quite slow, for example when measuring text.
 // Simulate this by sleeping for 1 millisecond.
-static CSSSize _measure(void *context, float width, CSSMeasureMode widthMode, float height, CSSMeasureMode heightMode) {
+static CSSSize _measure(void *context,
+                        float width,
+                        CSSMeasureMode widthMode,
+                        float height,
+                        CSSMeasureMode heightMode) {
   struct timespec sleeptime = {0, 1000000};
   nanosleep(&sleeptime, NULL);
-  return (CSSSize) {
-    .width = widthMode == CSSMeasureModeUndefined ? 10 : width,
-    .height = heightMode == CSSMeasureModeUndefined ? 10 : width,
+  return (CSSSize){
+      .width = widthMode == CSSMeasureModeUndefined ? 10 : width,
+      .height = heightMode == CSSMeasureModeUndefined ? 10 : width,
   };
 }