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}
diff --git a/rtc_base/socketaddresspair.h b/rtc_base/socketaddresspair.h
index 8ff0ee6..5ff148a 100644
--- a/rtc_base/socketaddresspair.h
+++ b/rtc_base/socketaddresspair.h
@@ -19,23 +19,23 @@
 // identify a connection between two machines.  (For UDP, this "connection" is
 // not maintained explicitly in a socket.)
 class SocketAddressPair {
-public:
+ public:
   SocketAddressPair() {}
   SocketAddressPair(const SocketAddress& srs, const SocketAddress& dest);
 
   const SocketAddress& source() const { return src_; }
   const SocketAddress& destination() const { return dest_; }
 
-  bool operator ==(const SocketAddressPair& r) const;
-  bool operator <(const SocketAddressPair& r) const;
+  bool operator==(const SocketAddressPair& r) const;
+  bool operator<(const SocketAddressPair& r) const;
 
   size_t Hash() const;
 
-private:
+ private:
   SocketAddress src_;
   SocketAddress dest_;
 };
 
-} // namespace rtc
+}  // namespace rtc
 
-#endif // RTC_BASE_SOCKETADDRESSPAIR_H_
+#endif  // RTC_BASE_SOCKETADDRESSPAIR_H_