remoting: Add out-of-line copy ctors for complex classes.

remoting/signaling/server_log_entry.cc

Index: remoting/signaling/server_log_entry.cc
diff --git a/remoting/signaling/server_log_entry.cc b/remoting/signaling/server_log_entry.cc
index 9eda89310a8801af1e5d38abf9dab42f0b489892..080f8ea0cc013a8a51db97312789525090ca89b6 100644
--- a/remoting/signaling/server_log_entry.cc
+++ b/remoting/signaling/server_log_entry.cc
@@ -35,6 +35,8 @@ const char kKeyCpu[] = "cpu";
 ServerLogEntry::ServerLogEntry() {
 }
 
+ServerLogEntry::ServerLogEntry(const ServerLogEntry& other) = default;
+
 ServerLogEntry::~ServerLogEntry() {
 }