scheduler: Tell the scheduler about frame timing

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 fb331ac6e3766aad23db042059ad0c43b549bb18..4a447721f58921b8fe0500568ed583f76288b5c8 100644
--- a/Source/platform/scheduler/Scheduler.cpp
+++ b/Source/platform/scheduler/Scheduler.cpp
@@ -126,6 +126,16 @@ Scheduler::~Scheduler()
     }
 }
 
+void Scheduler::willBeginFrame(const WebBeginFrameArgs& args)
+{
+    // TODO: Use frame deadline and interval to schedule idle tasks.
+}
+
+void Scheduler::didCommitFrameToCompositor()
+{
+    // TODO: Trigger the frame deadline immediately.
+}
+
 void Scheduler::scheduleIdleTask(const TraceLocation& location, const IdleTask& idleTask)
 {
     // TODO: send a real allottedTime here.