SF: Remove ISchedulerCallback::scheduleComposite

SF can make the calls, so this callback is unnecessary.

Bug: 185535769
Test: Build
Change-Id: I94f95fef22b076f1058d2d8d969275b73d3a1049
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index a8113d4..0c72124 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -83,12 +83,8 @@
 namespace scheduler {
 
 struct ISchedulerCallback {
-    // Indicates frame activity, i.e. whether commit and/or composite is taking place.
-    enum class FrameHint { kNone, kActive };
-
     using DisplayModeEvent = scheduler::DisplayModeEvent;
 
-    virtual void scheduleComposite(FrameHint) = 0;
     virtual void setVsyncEnabled(bool) = 0;
     virtual void requestDisplayMode(DisplayModePtr, DisplayModeEvent) = 0;
     virtual void kernelTimerChanged(bool expired) = 0;
@@ -210,8 +206,8 @@
     // Notifies the scheduler about a refresh rate timeline change.
     void onNewVsyncPeriodChangeTimeline(const hal::VsyncPeriodChangeTimeline& timeline);
 
-    // Notifies the scheduler post composition.
-    void onPostComposition(nsecs_t presentTime);
+    // Notifies the scheduler post composition. Returns if recomposite is needed.
+    bool onPostComposition(nsecs_t presentTime);
 
     // Notifies the scheduler when the display size has changed. Called from SF's main thread
     void onActiveDisplayAreaChanged(uint32_t displayArea);
@@ -245,8 +241,6 @@
 private:
     friend class TestableScheduler;
 
-    using FrameHint = ISchedulerCallback::FrameHint;
-
     enum class ContentDetectionState { Off, On };
     enum class TimerState { Reset, Expired };
     enum class TouchState { Inactive, Active };