Rename RefreshRateOverlay vsyncRate to RefreshRate

With MRR devices, vsyncRate and refreshRate are the same thing, but
this is not true for dVRR devices.

Test: manually test refresh rate indicator
Change-Id: I0946ad4164257b1919035a0db1080ec06ba1ed53
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 0d2e514..029c052 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2230,12 +2230,12 @@
                                                    kMainThreadContext) {
         if (const auto displayIdOpt = getHwComposer().toPhysicalDisplayId(data.display)) {
             if (const auto display = getDisplayDeviceLocked(*displayIdOpt)) {
-                const Fps fps = Fps::fromPeriodNsecs(getHwComposer().getComposer()->isVrrSupported()
-                                                             ? data.refreshPeriodNanos
-                                                             : data.vsyncPeriodNanos);
-                ATRACE_FORMAT("%s Fps %d", whence, fps.getIntValue());
-                display->updateRefreshRateOverlayRate(fps, display->getActiveMode().fps,
-                                                      /* setByHwc */ true);
+                const Fps refreshRate = Fps::fromPeriodNsecs(
+                        getHwComposer().getComposer()->isVrrSupported() ? data.refreshPeriodNanos
+                                                                        : data.vsyncPeriodNanos);
+                ATRACE_FORMAT("%s refresh rate = %d", whence, refreshRate.getIntValue());
+                display->updateRefreshRateOverlayRate(refreshRate, display->getActiveMode().fps,
+                                                      /* showRefreshRate */ true);
             }
         }
     }));
@@ -8833,7 +8833,8 @@
                     const auto status =
                             getHwComposer().setRefreshRateChangedCallbackDebugEnabled(id, enable);
                     if (status != NO_ERROR) {
-                        ALOGE("Error updating the refresh rate changed callback debug enabled");
+                        ALOGE("Error %s refresh rate changed callback debug",
+                              enable ? "enabling" : "disabling");
                         enableOverlay(/*setByHwc*/ false);
                     }
                 }