input accumulators: pass RawEvent references instead of pointers

Change-Id: I7f538b3e08704df7c99e13e59302832dfe517a1d
Test: atest inputflinger_test
Test: manually test a multi-touch screen, touchpad, mouse, and drawing
      tablet works
Bug: 245989146
Flag: EXEMPT refactor
diff --git a/services/inputflinger/reader/mapper/SingleTouchInputMapper.cpp b/services/inputflinger/reader/mapper/SingleTouchInputMapper.cpp
index ed0e270..b7365d3 100644
--- a/services/inputflinger/reader/mapper/SingleTouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/SingleTouchInputMapper.cpp
@@ -33,7 +33,7 @@
 std::list<NotifyArgs> SingleTouchInputMapper::process(const RawEvent* rawEvent) {
     std::list<NotifyArgs> out = TouchInputMapper::process(rawEvent);
 
-    mSingleTouchMotionAccumulator.process(rawEvent);
+    mSingleTouchMotionAccumulator.process(*rawEvent);
     return out;
 }