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/Android.bp b/services/inputflinger/Android.bp
index 554514d..d62f4aa 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -56,7 +56,7 @@
 filegroup {
     name: "libinputflinger_sources",
     srcs: [
-        "InputClassifier.cpp",
+        "InputProcessor.cpp",
         "InputCommonConverter.cpp",
         "PreferStylusOverTouchBlocker.cpp",
         "UnwantedInteractionBlocker.cpp",