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/Classes/PeerConnection/RTCRtpReceiver+Private.h

@@ -30,12 +30,11 @@ class RtpReceiverDelegateAdapter : public RtpReceiverObserverInterface {
 
 @interface RTCRtpReceiver ()
 
-@property(nonatomic, readonly)
-    rtc::scoped_refptr<webrtc::RtpReceiverInterface> nativeRtpReceiver;
+@property(nonatomic, readonly) rtc::scoped_refptr<webrtc::RtpReceiverInterface> nativeRtpReceiver;
 
 /** Initialize an RTCRtpReceiver with a native RtpReceiverInterface. */
 - (instancetype)initWithNativeRtpReceiver:
-    (rtc::scoped_refptr<webrtc::RtpReceiverInterface>)nativeRtpReceiver
+        (rtc::scoped_refptr<webrtc::RtpReceiverInterface>)nativeRtpReceiver
     NS_DESIGNATED_INITIALIZER;
 
 + (RTCRtpMediaType)mediaTypeForNativeMediaType:(cricket::MediaType)nativeMediaType;