Use sysprop APIs for InputFlinger: per_window_input_rotation

Add a sysprop file for InputFlinger, and add a sysprop entry for the
per_window_input_rotation flag.

Bug: 179274888
Test: build
Change-Id: Id11f72f7774e2b04a9817ac5807808ccbd33fb28
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index d2b8739..05efcf6 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -47,6 +47,7 @@
 // Log debug messages about hover events.
 #define DEBUG_HOVER 0
 
+#include <InputFlingerProperties.sysprop.h>
 #include <android-base/chrono_utils.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
@@ -93,7 +94,8 @@
 // coordinates and SurfaceFlinger includes the display rotation in the input window transforms.
 static bool isPerWindowInputRotationEnabled() {
     static const bool PER_WINDOW_INPUT_ROTATION =
-            base::GetBoolProperty("persist.debug.per_window_input_rotation", false);
+            sysprop::InputFlingerProperties::per_window_input_rotation().value_or(false);
+
     return PER_WINDOW_INPUT_ROTATION;
 }