Add a space before seconds units like all other units.

base/time/time_unittest.cc

Index: base/time/time_unittest.cc
diff --git a/base/time/time_unittest.cc b/base/time/time_unittest.cc
index 2731a6272bbfc3297dafad3e794aed654024ba90..8906c3bee193e1b876ceb0627a3cc844693fca6a 100644
--- a/base/time/time_unittest.cc
+++ b/base/time/time_unittest.cc
@@ -1116,17 +1116,17 @@ TEST(TimeDeltaLogging, DCheckEqCompiles) {
 
 TEST(TimeDeltaLogging, EmptyIsZero) {
   TimeDelta zero;
-  EXPECT_EQ("0s", AnyToString(zero));
+  EXPECT_EQ("0 s", AnyToString(zero));
 }
 
 TEST(TimeDeltaLogging, FiveHundredMs) {
   TimeDelta five_hundred_ms = TimeDelta::FromMilliseconds(500);
-  EXPECT_EQ("0.5s", AnyToString(five_hundred_ms));
+  EXPECT_EQ("0.5 s", AnyToString(five_hundred_ms));
 }
 
 TEST(TimeDeltaLogging, MinusTenSeconds) {
   TimeDelta minus_ten_seconds = TimeDelta::FromSeconds(-10);
-  EXPECT_EQ("-10s", AnyToString(minus_ten_seconds));
+  EXPECT_EQ("-10 s", AnyToString(minus_ten_seconds));
 }
 
 TEST(TimeDeltaLogging, DoesNotMessUpFormattingFlags) {