[Android] Add an out-of-app instrumentation driver APK.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index 7750eeecbedaf40248c10719368999e92386dc5f..110ed629cf3637c14ac2e29e574855a3fcc01874 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -1460,6 +1460,7 @@ if (is_android) {
   android_library("base_java_test_support") {
     deps = [
       ":base_java",
+      "//testing/android/reporter:reporter_java",
     ]
     DEPRECATED_java_in_dir = "test/android/javatests/src"
   }