SurfaceFlinger: Layer::getFrameRate() with relatives

If an app set a framerate on a layer, then getFrameRate() on
ancestors/successors of this layer should return NoVote to allow the
refresh rate heuristic to be based on the the actual layers that voted.

Bug: 151274728
Test: Swappy with ANativeWindow_setFrateRate
Change-Id: Icfdf8e8fd4d92ba520bbc894bb9971b980691518
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 84e55ae..414085c 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -394,6 +394,7 @@
     auto& mutableHwcPhysicalDisplayIdMap() { return getHwComposer().mPhysicalDisplayIdMap; }
     auto& mutableInternalHwcDisplayId() { return getHwComposer().mInternalHwcDisplayId; }
     auto& mutableExternalHwcDisplayId() { return getHwComposer().mExternalHwcDisplayId; }
+    auto& mutableUseFrameRateApi() { return mFlinger->useFrameRateApi; }
 
     auto fromHandle(const sp<IBinder>& handle) {
         Mutex::Autolock _l(mFlinger->mStateLock);