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/socketfactory.h

@@ -17,7 +17,7 @@
 namespace rtc {
 
 class SocketFactory {
-public:
+ public:
   virtual ~SocketFactory() {}
 
   // Returns a new socket for blocking communication.  The type can be
@@ -28,6 +28,6 @@ public:
   virtual AsyncSocket* CreateAsyncSocket(int family, int type) = 0;
 };
 
-} // namespace rtc
+}  // namespace rtc
 
-#endif // RTC_BASE_SOCKETFACTORY_H_
+#endif  // RTC_BASE_SOCKETFACTORY_H_