[Android] Move testing/android/ to testing/android/native_test/

testing/android/BUILD.gn

-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("//build/config/android/rules.gni")
-
-# GYP: //testing/android/native_test.gyp:native_test_native_code
-source_set("native_test_native_code") {
-  testonly = true
-  sources = [
-    "native_test_jni_onload.cc",
-    "native_test_launcher.cc",
-    "native_test_launcher.h",
-  ]
-  libs = [ "log" ]
-  deps = [
-    ":native_test_jni_headers",
-    ":native_test_util",
-    "//base",
-    "//base/test:test_support",
-    "//base/third_party/dynamic_annotations",
-    "//testing/gtest",
-  ]
-}
-
-# GYP: //testing/android/native_test.gyp:native_test_jni_headers
-generate_jni("native_test_jni_headers") {
-  sources = [
-    "java/src/org/chromium/native_test/ChromeNativeTestActivity.java",
-  ]
-  jni_package = "testing"
-}
-
-# GYP: //testing/android/native_test.gyp:native_test_util
-source_set("native_test_util") {
-  sources = [
-    "native_test_util.cc",
-    "native_test_util.h",
-  ]
-  deps = [
-    "//base",
-  ]
-}