fix all cpplint warnings

make lint should pass again now

sims/nic/i40e_bm/i40e_bm.cc

@@ -827,7 +827,7 @@ int_ev::int_ev() {
 
 class i40e_factory : public nicbm::MultiNicRunner::DeviceFactory {
  public:
-  virtual nicbm::Runner::Device &create() override {
+  nicbm::Runner::Device &create() override {
     return *new i40e::i40e_bm;
   }
 };

trace/log_parser.cc

@@ -124,12 +124,12 @@ bool log_parser::next_event() {
 
 void log_parser::read_coro(coro_t::push_type &sink_) {
   sink = &sink_;
-  while (next_event())
-    ;
+  while (next_event()) {
+  }
 }
 
 void log_parser::yield(std::shared_ptr<event> ev) {
   got_event = true;
   ev->source = this;
   (*sink)(ev);
-}
\ No newline at end of file
+}

trace/process.cc

@@ -24,10 +24,12 @@
 
 #include "trace/process.h"
 
+#include <algorithm>
 #include <boost/bind.hpp>
 #include <boost/foreach.hpp>
 #include <iostream>
 #include <memory>
+#include <utility>
 #include <vector>
 
 #include "trace/events.h"