SF: Rename VsyncModulator

Adopt Vsync/vsync spelling over the awkward and less common VSync/vSync.

Bug: 160012986
Test: Build
Change-Id: Ibe230906e969d2ef8100ca7b1f5650dfe227c927
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index c46c914..4a59c19 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -61,7 +61,7 @@
         "StrongTypingTest.cpp",
         "VSyncDispatchTimerQueueTest.cpp",
         "VSyncDispatchRealtimeTest.cpp",
-        "VSyncModulatorTest.cpp",
+        "VsyncModulatorTest.cpp",
         "VSyncPredictorTest.cpp",
         "VSyncReactorTest.cpp",
         "mock/DisplayHardware/MockComposer.cpp",