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}

examples/objc/AppRTCMobile/RTCIceCandidate+JSON.h

@@ -13,8 +13,7 @@
 @interface RTCIceCandidate (JSON)
 
 + (RTCIceCandidate *)candidateFromJSONDictionary:(NSDictionary *)dictionary;
-+ (NSArray<RTCIceCandidate *> *)candidatesFromJSONDictionary:
-    (NSDictionary *)dictionary;
++ (NSArray<RTCIceCandidate *> *)candidatesFromJSONDictionary:(NSDictionary *)dictionary;
 + (NSData *)JSONDataForIceCandidates:(NSArray<RTCIceCandidate *> *)candidates
                             withType:(NSString *)typeValue;
 - (NSData *)JSONData;