Revert "Revert "Revert "SF: Remove refresh_rate_switching flag."""

This reverts commit aa52b007cb5c96d6124a293ca80c430c7051f7f3.

Reason for revert: The original revert cause a failure: b/148821456. So the revert was created. Which caused a build failure b/148835312. Reverting the original change and fixing the test (that caused build failure) with it.

Bug: 148835312
Bug: 148821456
Bug: 148835894
Test: build, install on coral.
Test: adb shell /data/nativetest64/libsurfaceflinger_unittest/libsurfaceflinger_unittest
Change-Id: I48964c7c27ef53e8fb03d959ef85ee2ec64e1ed1
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.h b/services/surfaceflinger/SurfaceFlingerProperties.h
index 5f88322..e394cca 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.h
+++ b/services/surfaceflinger/SurfaceFlingerProperties.h
@@ -73,6 +73,8 @@
 int64_t color_space_agnostic_dataspace(
         android::hardware::graphics::common::V1_2::Dataspace defaultValue);
 
+bool refresh_rate_switching(bool defaultValue);
+
 int32_t set_idle_timer_ms(int32_t defaultValue);
 
 int32_t set_touch_timer_ms(int32_t defaultValue);