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}

modules/audio_coding/test/EncodeDecodeTest.cc

@@ -10,10 +10,10 @@
 
 #include "modules/audio_coding/test/EncodeDecodeTest.h"
 
-#include <memory>
-#include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
+#include <memory>
+#include <sstream>  // no-presubmit-check TODO(webrtc:8982)
 
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "common_types.h"  // NOLINT(build/include)