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/modules/video_coding/test/test_util.h b/modules/video_coding/test/test_util.h
index 404e49e..a38fc58 100644
--- a/modules/video_coding/test/test_util.h
+++ b/modules/video_coding/test/test_util.h
@@ -18,6 +18,7 @@
   virtual ~NullEventFactory() {}
 
   webrtc::EventWrapper* CreateEvent() override { return new NullEvent; }
+
  private:
   // Private class to avoid more dependencies on it in tests.
   class NullEvent : public webrtc::EventWrapper {