Add default input dispatching timeout constant

To use the same number consistently in java and native, add
IInputConstants interface where we will store the constants.

Bug: 161009325
Test: atest inputflinger_tests
Change-Id: I10f45547b1161e3768a134b38bf40d77a3a82f09
diff --git a/services/inputflinger/tests/InputFlingerService_test.cpp b/services/inputflinger/tests/InputFlingerService_test.cpp
index 87e0fb5..a4922fa 100644
--- a/services/inputflinger/tests/InputFlingerService_test.cpp
+++ b/services/inputflinger/tests/InputFlingerService_test.cpp
@@ -310,7 +310,9 @@
 
     mInfo.applicationInfo.name = TestAppInfoName;
     mInfo.applicationInfo.token = TestAppInfoToken;
-    mInfo.applicationInfo.dispatchingTimeoutNanos = TestAppInfoDispatchingTimeout.count();
+    mInfo.applicationInfo.dispatchingTimeoutMillis =
+            std::chrono::duration_cast<std::chrono::milliseconds>(TestAppInfoDispatchingTimeout)
+                    .count();
 
     InitializeInputFlinger();
 }