Add: check exploded time is properly converted

base/time/time.cc

Index: base/time/time.cc
diff --git a/base/time/time.cc b/base/time/time.cc
index 76ffeb744112d1909afa9b488bcfa277950225bb..fcb39eb6bd20e5b09eb8dae9c484f9089b3ab6bf 100644
--- a/base/time/time.cc
+++ b/base/time/time.cc
@@ -344,4 +344,11 @@ bool Time::Exploded::HasValidValues() const {
          is_in_range(millisecond, 0, 999);
 }
 
+bool Time::Exploded::operator!=(const Exploded& rhs) {
+  return year != rhs.year || month != rhs.month ||
+         day_of_month != rhs.day_of_month || hour != rhs.hour ||
+         minute != rhs.minute || second != rhs.second ||
+         millisecond != rhs.millisecond;
+}
+
 }  // namespace base