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/testclient.h b/rtc_base/testclient.h
index c0dbe65..a0d98b3 100644
--- a/rtc_base/testclient.h
+++ b/rtc_base/testclient.h
@@ -34,7 +34,7 @@
     virtual ~Packet();
 
     SocketAddress addr;
-    char*  buf;
+    char* buf;
     size_t size;
     PacketTime packet_time;
   };
@@ -93,7 +93,9 @@
   // Workaround for the fact that AsyncPacketSocket::GetConnState doesn't exist.
   Socket::ConnState GetState();
   // Slot for packets read on the socket.
-  void OnPacket(AsyncPacketSocket* socket, const char* buf, size_t len,
+  void OnPacket(AsyncPacketSocket* socket,
+                const char* buf,
+                size_t len,
                 const SocketAddress& remote_addr,
                 const PacketTime& packet_time);
   void OnReadyToSend(AsyncPacketSocket* socket);