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}

rtc_base/event.cc

@@ -70,8 +70,7 @@ bool Event::Wait(int milliseconds) {
 #endif
 
 Event::Event(bool manual_reset, bool initially_signaled)
-    : is_manual_reset_(manual_reset),
-      event_status_(initially_signaled) {
+    : is_manual_reset_(manual_reset), event_status_(initially_signaled) {
   RTC_CHECK(pthread_mutex_init(&event_mutex_, nullptr) == 0);
   pthread_condattr_t cond_attr;
   RTC_CHECK(pthread_condattr_init(&cond_attr) == 0);