SF: Rename HwcConfigIndexType to DisplayModeId

Bug: 159590486
Bug: 176148651
Test: atest libsurfaceflinger_unittest

Change-Id: Ie177b213bb7a8ab9f67a51d2b5cf27d8fd97b780
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index 2192977..d3e90e3 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -91,7 +91,7 @@
     }
 
     void onNonPrimaryDisplayConfigChanged(ConnectionHandle handle, PhysicalDisplayId displayId,
-                                          HwcConfigIndexType configId, nsecs_t vsyncPeriod) {
+                                          DisplayModeId configId, nsecs_t vsyncPeriod) {
         return Scheduler::onNonPrimaryDisplayConfigChanged(handle, displayId, configId,
                                                            vsyncPeriod);
     }