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}

call/rtx_receive_stream.cc

@@ -63,8 +63,7 @@ void RtxReceiveStream::OnRtpPacket(const RtpPacketReceived& rtx_packet) {
   media_packet.set_recovered(true);
 
   // Skip the RTX header.
-  rtc::ArrayView<const uint8_t> rtx_payload =
-      payload.subview(kRtxHeaderSize);
+  rtc::ArrayView<const uint8_t> rtx_payload = payload.subview(kRtxHeaderSize);
 
   uint8_t* media_payload = media_packet.AllocatePayload(rtx_payload.size());
   RTC_DCHECK(media_payload != nullptr);