Update from https://crrev.com/317530

base/time/time_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/time/time.h"
 
 #include <time.h>
 
 #include <limits>
 #include <string>
@@ skipping 849 matching lines @@
             TimeDelta::FromMicroseconds(negative_one).magnitude());
 
   const int64 max_int64_minus_one = std::numeric_limits<int64>::max() - 1;
   const int64 min_int64_plus_two = std::numeric_limits<int64>::min() + 2;
   EXPECT_EQ(TimeDelta::FromMicroseconds(max_int64_minus_one),
             TimeDelta::FromMicroseconds(max_int64_minus_one).magnitude());
   EXPECT_EQ(TimeDelta::FromMicroseconds(max_int64_minus_one),
             TimeDelta::FromMicroseconds(min_int64_plus_two).magnitude());
 }
 
+
+TEST(TimeDelta, multiply_by) {
+  double d = 0.5;
+  EXPECT_EQ(TimeDelta::FromMilliseconds(500),
+            TimeDelta::FromMilliseconds(1000).multiply_by(d));
+  EXPECT_EQ(TimeDelta::FromMilliseconds(2000),
+            TimeDelta::FromMilliseconds(1000).divide_by(d));
+}
+
 TEST(TimeDeltaLogging, DCheckEqCompiles) {
   DCHECK_EQ(TimeDelta(), TimeDelta());
 }
 
 TEST(TimeDeltaLogging, EmptyIsZero) {
   TimeDelta zero;
   EXPECT_EQ("0s", AnyToString(zero));
 }
 
 TEST(TimeDeltaLogging, FiveHundredMs) {
@@ skipping 67 matching lines @@
 
 TEST(TimeTicksLogging, DoesNotMakeStreamBad) {
   std::ostringstream oss;
   oss << TimeTicks();
   EXPECT_TRUE(oss.good());
 }
 
 }  // namespace
 
 }  // namespace base