Fix copyright headers

Went missing in a bunch of places.

Change-Id: I911fc89c893c015c9fc444c15a9ec6e30400538b

tools/add_tp_diff_test.sh

diff --git a/tools/add_tp_diff_test.sh b/tools/add_tp_diff_test.sh
index 92a9ead..196fd5f 100755
--- a/tools/add_tp_diff_test.sh
+++ b/tools/add_tp_diff_test.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -e
 
 read -p "Name of SQL file to create (in test/trace_processor): " sqlfile