SF: Clean up remaining display identifiers

Bug: 74619554
Test: Build
Change-Id: Icd8457b6496f02c6010c724cfa6ae678f6e01adf
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 2f22989..ae5a100 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -91,8 +91,9 @@
 
     auto onInitializeDisplays() { return mFlinger->onInitializeDisplays(); }
 
-    auto setPowerModeInternal(const sp<DisplayDevice>& hw, int mode, bool stateLockHeld = false) {
-        return mFlinger->setPowerModeInternal(hw, mode, stateLockHeld);
+    auto setPowerModeInternal(const sp<DisplayDevice>& display, int mode,
+                              bool stateLockHeld = false) {
+        return mFlinger->setPowerModeInternal(display, mode, stateLockHeld);
     }
 
     /* ------------------------------------------------------------------------