Reformat the WebRTC code base

Running clang-format with chromium's style guide.

The goal is n-fold:
 * providing consistency and readability (that's what code guidelines are for)
 * preventing noise with presubmit checks and git cl format
 * building on the previous point: making it easier to automatically fix format issues
 * you name it

Please consider using git-hyper-blame to ignore this commit.

Bug: webrtc:9340
Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87
Reviewed-on: https://webrtc-review.googlesource.com/81185
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23660}

sdk/objc/Framework/Headers/WebRTC/RTCMetrics.h

@@ -20,5 +20,4 @@
 RTC_EXTERN void RTCEnableMetrics(void);
 
 /** Gets and clears native histograms. */
-RTC_EXTERN NSArray<RTCMetricsSampleInfo *> *RTCGetAndResetMetrics(void);
-
+RTC_EXTERN NSArray<RTCMetricsSampleInfo*>* RTCGetAndResetMetrics(void);