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/pc/rtpsender.cc b/pc/rtpsender.cc
index c7fe83f..cffcd8b 100644
--- a/pc/rtpsender.cc
+++ b/pc/rtpsender.cc
@@ -554,7 +554,7 @@
       break;
   }
   bool success = worker_thread_->Invoke<bool>(RTC_FROM_HERE, [&] {
-      return media_channel_->SetVideoSend(ssrc_, &options, track_);
+    return media_channel_->SetVideoSend(ssrc_, &options, track_);
   });
   RTC_DCHECK(success);
 }