[wpilibc] Transition C++ classes to units::second_t (#3396)

A lot of these are breaking changes. frc::Timer was replaced with the
contents of frc2::Timer. The others were in-place argument changes or
removing deprecated non-unit overloads.

wpilibNewCommands/src/main/native/include/frc2/command/TrapezoidProfileCommand.h

@@ -7,10 +7,10 @@
 #include <functional>
 #include <initializer_list>
 
+#include <frc/Timer.h>
 #include <frc/trajectory/TrapezoidProfile.h>
 #include <wpi/ArrayRef.h>
 
-#include "frc2/Timer.h"
 #include "frc2/command/CommandBase.h"
 #include "frc2/command/CommandHelper.h"
 
@@ -76,7 +76,7 @@ class TrapezoidProfileCommand
   frc::TrapezoidProfile<Distance> m_profile;
   std::function<void(State)> m_output;
 
-  Timer m_timer;
+  frc::Timer m_timer;
 };
 
 }  // namespace frc2