Always use milliseconds in the Budget API implementation

chrome/browser/budget_service/budget_database_unittest.cc

Index: chrome/browser/budget_service/budget_database_unittest.cc
diff --git a/chrome/browser/budget_service/budget_database_unittest.cc b/chrome/browser/budget_service/budget_database_unittest.cc
index 3d5bf2ac9dbd7676f3d8a70970616bf278c1ab1a..c65493ab3df4f3c439a1b01c7e491aa8da4f8a03 100644
--- a/chrome/browser/budget_service/budget_database_unittest.cc
+++ b/chrome/browser/budget_service/budget_database_unittest.cc
@@ -133,7 +133,8 @@ TEST_F(BudgetDatabaseTest, AddEngagementBudgetTest) {
   ASSERT_DOUBLE_EQ(daily_budget * kDefaultExpirationInDays,
                    prediction_[0]->budget_at);
   ASSERT_EQ(0, prediction_[1]->budget_at);
-  ASSERT_EQ(expiration_time.ToDoubleT(), prediction_[1]->time);
+  ASSERT_EQ(expiration_time.ToDoubleT() * base::Time::kMillisecondsPerSecond,
+            prediction_[1]->time);
 
   // Advance time 1 day and add more engagement budget.
   clock->Advance(base::TimeDelta::FromDays(1));
@@ -145,9 +146,11 @@ TEST_F(BudgetDatabaseTest, AddEngagementBudgetTest) {
   ASSERT_DOUBLE_EQ(daily_budget * (kDefaultExpirationInDays + 1),
                    prediction_[0]->budget_at);
   ASSERT_DOUBLE_EQ(daily_budget, prediction_[1]->budget_at);
-  ASSERT_EQ(expiration_time.ToDoubleT(), prediction_[1]->time);
+  ASSERT_EQ(expiration_time.ToDoubleT() * base::Time::kMillisecondsPerSecond,
+            prediction_[1]->time);
   ASSERT_DOUBLE_EQ(0, prediction_[2]->budget_at);
-  ASSERT_EQ((expiration_time + base::TimeDelta::FromDays(1)).ToDoubleT(),
+  ASSERT_EQ((expiration_time + base::TimeDelta::FromDays(1)).ToDoubleT() *
+                base::Time::kMillisecondsPerSecond,
             prediction_[2]->time);
 
   // Advance time by 59 minutes and check that no engagement budget is added