Rename InputClassifier to InputProcessor

The InputClassifier stage now calls a HAL that was renamed to
IInputProcessor. Let's rename the input stage accordingly.

Bug: 210158587
Test: atest inputflinger_tests
Change-Id: Id1a4f01b07b404064917acd0beb04b839abb2929
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 76a7c19..6da2145 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -41,8 +41,8 @@
         "EventHub_test.cpp",
         "FocusResolver_test.cpp",
         "IInputFlingerQuery.aidl",
-        "InputClassifier_test.cpp",
-        "InputClassifierConverter_test.cpp",
+        "InputProcessor_test.cpp",
+        "InputProcessorConverter_test.cpp",
         "InputDispatcher_test.cpp",
         "InputReader_test.cpp",
         "InputFlingerService_test.cpp",