Add test coverage to InputConsumerNoResampling

Implemented tests that check for multiple samples in a single
batch

Bug: 297226446
Flag: TEST_ONLY
Test: TEST=libinput_tests; m $TEST &&
$ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
--gtest_filter="*InputPublisherAndConsumerNoResamplingTest*"

Change-Id: Ib34010048225f4f66e6380d05fd4df75fa7fa810
diff --git a/include/input/InputConsumerNoResampling.h b/include/input/InputConsumerNoResampling.h
index 9e48b08..c7b1970 100644
--- a/include/input/InputConsumerNoResampling.h
+++ b/include/input/InputConsumerNoResampling.h
@@ -24,7 +24,7 @@
 /**
  * An interface to receive batched input events. Even if you don't want batching, you still have to
  * use this interface, and some of the events will be batched if your implementation is slow to
- * handle the incoming input.
+ * handle the incoming input. The events received by these callbacks are never null.
  */
 class InputConsumerCallbacks {
 public: