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/compile_assert_c.h

@@ -16,6 +16,10 @@
 // Example:
 //   RTC_COMPILE_ASSERT(sizeof(foo) < 128);
 // Note: In C++, use static_assert instead!
-#define RTC_COMPILE_ASSERT(expression) switch (0) {case 0: case expression:;}
+#define RTC_COMPILE_ASSERT(expression) \
+  switch (0) {                         \
+    case 0:                            \
+    case expression:;                  \
+  }
 
 #endif  // RTC_BASE_COMPILE_ASSERT_C_H_