Add canExceedIdleDeadlineIfRequired function to Scheduler and use it in Oilpan

Source/platform/scheduler/Scheduler.cpp

Index: Source/platform/scheduler/Scheduler.cpp
diff --git a/Source/platform/scheduler/Scheduler.cpp b/Source/platform/scheduler/Scheduler.cpp
index 2beaf11362b3efda681c4b66b13883a8296be983..210feb5b9857346798a917840e8334792c8c851b 100644
--- a/Source/platform/scheduler/Scheduler.cpp
+++ b/Source/platform/scheduler/Scheduler.cpp
@@ -84,4 +84,11 @@ bool Scheduler::shouldYieldForHighPriorityWork() const
     return false;
 }
 
+bool Scheduler::isMaximumIdleDeadline(double deadlineSeconds) const
+{
+    if (m_webScheduler)
+        return m_webScheduler->isMaximumIdleDeadline(deadlineSeconds);
+    return false;
+}
+
 } // namespace blink