Provide simple wrappers for base/time types in WTF

third_party/WebKit/Source/wtf/TimeTest.cpp

+#include "wtf/Time.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace WTF {
+namespace {
+
+TEST(TimeTicks, NumericOperations) {
+  TimeTicks zero;
+  ASSERT_EQ(0, zero.ToInternalValueForTesting());
+
+  TimeTicks t1 = zero + TimeDelta::FromMilliseconds(1001);
+  ASSERT_EQ(1001000, t1.ToInternalValueForTesting());
+
+  TimeTicks t2 = zero + TimeDelta::FromSeconds(1);
+  ASSERT_EQ(TimeDelta::FromMilliseconds(1), t1 - t2);
+}
+
+TEST(Time, NumericOperations) {
+  Time zero;
+  ASSERT_EQ(0, zero.ToInternalValueForTesting());
+
+  Time t1 = zero + TimeDelta::FromMilliseconds(1001);
+  ASSERT_EQ(1001000, t1.ToInternalValueForTesting());
+
+  Time t2 = zero + TimeDelta::FromSeconds(1);
+  ASSERT_EQ(TimeDelta::FromMilliseconds(1), t1 - t2);
+}
+
+}  // namespace
+}  // namespace WTF