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/audio_coding/neteq/tools/rtp_encode.cc b/modules/audio_coding/neteq/tools/rtp_encode.cc
index 66e7a28..1984e3f 100644
--- a/modules/audio_coding/neteq/tools/rtp_encode.cc
+++ b/modules/audio_coding/neteq/tools/rtp_encode.cc
@@ -247,11 +247,16 @@
   AudioEncoderCng::Config cng_config;
   const auto default_payload_type = [&] {
     switch (sample_rate_hz) {
-      case 8000: return 13;
-      case 16000: return 98;
-      case 32000: return 99;
-      case 48000: return 100;
-      default: RTC_NOTREACHED();
+      case 8000:
+        return 13;
+      case 16000:
+        return 98;
+      case 32000:
+        return 99;
+      case 48000:
+        return 100;
+      default:
+        RTC_NOTREACHED();
     }
     return 0;
   };