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}
diff --git a/sdk/objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h b/sdk/objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h
index c42f0cf..aee9bdd 100644
--- a/sdk/objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h
+++ b/sdk/objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h
@@ -22,8 +22,8 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-RTC_EXTERN NSString * const kRTCMediaStreamTrackKindAudio;
-RTC_EXTERN NSString * const kRTCMediaStreamTrackKindVideo;
+RTC_EXTERN NSString *const kRTCMediaStreamTrackKindAudio;
+RTC_EXTERN NSString *const kRTCMediaStreamTrackKindVideo;
 
 RTC_EXPORT
 @interface RTCMediaStreamTrack : NSObject