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/bitbuffer_unittest.cc

@@ -165,8 +165,8 @@ TEST(BitBufferTest, SetOffsetValues) {
   EXPECT_EQ(0u, bit_offset);
   EXPECT_FALSE(buffer.Seek(4, 1));
 
-  // Disable death test on Android because it relies on fork() and doesn't play
-  // nicely.
+// Disable death test on Android because it relies on fork() and doesn't play
+// nicely.
 #if GTEST_HAS_DEATH_TEST
 #if !defined(WEBRTC_ANDROID)
   // Passing a null out parameter is death.