Revert of [scheduler] Move task alignment into WakeUpBudgetPool.

third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc b/third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc
index b80dc892225328928b3fc4fdd3dd7235fa5c78e2..d31d49cb48dc22328bb506ae3bbd3456b6dc139a 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/budget_pool_unittest.cc
@@ -157,7 +157,7 @@
   // GetNextAllowedRunTime should return the desired time when in the
   // wakeup window and return the next wakeup otherwise.
   EXPECT_EQ(start_time_, pool->GetNextAllowedRunTime(start_time_));
-  EXPECT_EQ(base::TimeTicks() + base::TimeDelta::FromSeconds(10),
+  EXPECT_EQ(SecondsAfterStart(10) - base::TimeDelta::FromMicroseconds(1),
             pool->GetNextAllowedRunTime(MillisecondsAfterStart(15)));
 
   pool->RecordTaskRunTime(queue.get(), MillisecondsAfterStart(5),
@@ -170,7 +170,7 @@
   EXPECT_FALSE(pool->CanRunTasksAt(MillisecondsAfterStart(10), false));
   EXPECT_FALSE(pool->CanRunTasksAt(MillisecondsAfterStart(11), false));
   EXPECT_EQ(start_time_, pool->GetNextAllowedRunTime(start_time_));
-  EXPECT_EQ(base::TimeTicks() + base::TimeDelta::FromSeconds(10),
+  EXPECT_EQ(SecondsAfterStart(10) - base::TimeDelta::FromMicroseconds(1),
             pool->GetNextAllowedRunTime(MillisecondsAfterStart(15)));
 
   pool->OnWakeUp(MillisecondsAfterStart(12005));
@@ -182,8 +182,9 @@
   EXPECT_TRUE(pool->CanRunTasksAt(MillisecondsAfterStart(12014), false));
   EXPECT_FALSE(pool->CanRunTasksAt(MillisecondsAfterStart(12015), false));
   EXPECT_FALSE(pool->CanRunTasksAt(MillisecondsAfterStart(12016), false));
-  EXPECT_EQ(base::TimeTicks() + base::TimeDelta::FromSeconds(20),
-            pool->GetNextAllowedRunTime(SecondsAfterStart(13)));
+  EXPECT_EQ(
+      MillisecondsAfterStart(22005) - base::TimeDelta::FromMicroseconds(1),
+      pool->GetNextAllowedRunTime(SecondsAfterStart(13)));
 }
 
 }  // namespace scheduler