Update to 2018_v4 image and new build system. (#598)

* Revert "Force OpenCV to 3.1.0 (#602)"

This reverts commit 50ed55e8e2.

* Removes Simulation

* Removes old build system

* Removes old gtest

* Adds new gmock and gtest

* Updates to new ni-libraries

* removes MyRobot (to be replaced)

* moves files to new location

* Adds new sim backend and new test executables

* updates .styleguide and .gitignore

* Changes cpp WPILibVersion to a function

MSVC throws an AV with the old version.

* Disables USBCamera on all systems except for linux

* 2018 NI Libraries

* New build system

wpilibcIntegrationTests/src/FRCUserProgram/cpp/TimerTest.cpp

@@ -0,0 +1,41 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2014-2017. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "Timer.h"  // NOLINT(build/include_order)
+
+#include "TestBench.h"
+#include "gtest/gtest.h"
+
+using namespace frc;
+
+static const double kWaitTime = 0.5;
+
+class TimerTest : public testing::Test {
+ protected:
+  Timer* m_timer;
+
+  void SetUp() override { m_timer = new Timer; }
+
+  void TearDown() override { delete m_timer; }
+
+  void Reset() { m_timer->Reset(); }
+};
+
+/**
+ * Test if the Wait function works
+ */
+TEST_F(TimerTest, Wait) {
+  Reset();
+
+  double initialTime = m_timer->GetFPGATimestamp();
+
+  Wait(kWaitTime);
+
+  double finalTime = m_timer->GetFPGATimestamp();
+
+  EXPECT_NEAR(kWaitTime, finalTime - initialTime, 0.001);
+}