SurfaceFlinger: Add DISPLAY_EVENT_FRAME_RATE_OVERRIDE

Add a new event to DisplayEventReceiver that conveys a list
of apps whose frame rates have been overriden.
This event is processed by the DisplayManager to advertise the
new frame rate to the overridden app.

Change-Id: I89fce8b5b4d9db65ec5db7dd2393c384c0fcfd82
Bug: 169271059
Bug: 169271062
Bug: 170503758
Test: manual test using SF backdoor
diff --git a/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp b/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
index e25d501..5278641 100644
--- a/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SetFrameRateTest.cpp
@@ -172,14 +172,12 @@
     EXPECT_CALL(*eventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*eventThread, createEventConnection(_, _))
             .WillOnce(Return(new EventThreadConnection(eventThread.get(), /*callingUid=*/0,
-                                                       ResyncCallback(),
-                                                       ISurfaceComposer::eConfigChangedSuppress)));
+                                                       ResyncCallback())));
 
     EXPECT_CALL(*sfEventThread, registerDisplayEventConnection(_));
     EXPECT_CALL(*sfEventThread, createEventConnection(_, _))
             .WillOnce(Return(new EventThreadConnection(sfEventThread.get(), /*callingUid=*/0,
-                                                       ResyncCallback(),
-                                                       ISurfaceComposer::eConfigChangedSuppress)));
+                                                       ResyncCallback())));
 
     auto vsyncController = std::make_unique<mock::VsyncController>();
     auto vsyncTracker = std::make_unique<mock::VSyncTracker>();