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/RTCVideoCodecH264.h b/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH264.h
index d18e96d..d4dbf88 100644
--- a/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH264.h
+++ b/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH264.h
@@ -69,7 +69,7 @@
 
 /** Encoder. */
 RTC_EXPORT
-@interface RTCVideoEncoderH264 : NSObject<RTCVideoEncoder>
+@interface RTCVideoEncoderH264 : NSObject <RTCVideoEncoder>
 
 - (instancetype)initWithCodecInfo:(RTCVideoCodecInfo *)codecInfo;
 
@@ -77,15 +77,15 @@
 
 /** Decoder. */
 RTC_EXPORT
-@interface RTCVideoDecoderH264 : NSObject<RTCVideoDecoder>
+@interface RTCVideoDecoderH264 : NSObject <RTCVideoDecoder>
 @end
 
 /** Encoder factory. */
 RTC_EXPORT
-@interface RTCVideoEncoderFactoryH264 : NSObject<RTCVideoEncoderFactory>
+@interface RTCVideoEncoderFactoryH264 : NSObject <RTCVideoEncoderFactory>
 @end
 
 /** Decoder factory. */
 RTC_EXPORT
-@interface RTCVideoDecoderFactoryH264 : NSObject<RTCVideoDecoderFactory>
+@interface RTCVideoDecoderFactoryH264 : NSObject <RTCVideoDecoderFactory>
 @end