Log keystore key operation events using statsd.

This is the second CL on migrating keystore logging to statsd.
This migrates the logging for key operation events.
Three new ResponseCodes are added for the logging purpose of the
	abort operations.

Test: Adding tests for logging is yet to be decided.
Change-Id: Iede72341b0f4c80199c9e16cef96a5d98bca8754
Merged-In: I68c1d89beeb733e4b6ba493b8d95935b7e73df60
diff --git a/keystore/Android.bp b/keystore/Android.bp
index b41ad18..eb0009f 100644
--- a/keystore/Android.bp
+++ b/keystore/Android.bp
@@ -35,6 +35,7 @@
         "confirmation_manager.cpp",
         "grant_store.cpp",
         "key_creation_log_handler.cpp",
+        "key_operation_log_handler.cpp",
         "key_store_service.cpp",
         "keyblob_utils.cpp",
         "keymaster_enforcement.cpp",
@@ -43,8 +44,6 @@
         "keystore_utils.cpp",
         "legacy_keymaster_device_wrapper.cpp",
         "operation.cpp",
-        "operation_config.proto",
-        "operation_proto_handler.cpp",
         "permissions.cpp",
         "user_state.cpp",
     ],