Create test-legacy/ for android.test.legacy target

The android.test.legacy (and legacy-android-test) target depends on
code from both test-base/ and test-runner/ and do not really belong
in either folder.

Having a separate folder will also provide a convenient place for
the artifacts needed to publish android.test.legacy to
maven.google.com.

Bug: 30188076
Test: make checkbuild

(cherry picked from commit 898e7de6c71e00e11f299b67bd62d4af5fd12ca2)

Change-Id: I0538281980a55178dd72e5fae16d817cd31aa104
diff --git a/test-legacy/Android.bp b/test-legacy/Android.bp
new file mode 100644
index 0000000..d2af8a9
--- /dev/null
+++ b/test-legacy/Android.bp
@@ -0,0 +1,36 @@
+//
+// Copyright (C) 2018 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.
+//
+
+// Build the legacy-android-test library
+// =====================================
+// This contains the android.test classes that were in Android API level 25,
+// including those from android.test.runner.
+// Also contains the com.android.internal.util.Predicate[s] classes.
+java_library_static {
+    name: "legacy-android-test",
+
+    static_libs: [
+        "android.test.base-minus-junit",
+        "android.test.runner-minus-junit",
+        "android.test.mock",
+    ],
+
+    no_framework_libs: true,
+    libs: [
+        "framework",
+        "junit",
+    ],
+}