Revert of Multiprocess test client: Android child process launcher rework.

base/test/android/test_support_jni_registrar.h

Index: base/test/android/test_support_jni_registrar.h
diff --git a/base/test/android/test_support_jni_registrar.h b/base/test/android/test_support_jni_registrar.h
deleted file mode 100644
index f9b8067f3254f94b64e7c61e6e94b3039c30d4c6..0000000000000000000000000000000000000000
--- a/base/test/android/test_support_jni_registrar.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2016 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.
-
-#ifndef BASE_TEST_ANDROID_TEST_SUPPORT_JNI_REGISTRAR_H_
-#define BASE_TEST_ANDROID_TEST_SUPPORT_JNI_REGISTRAR_H_
-
-#include <jni.h>
-
-#include "base/base_export.h"
-
-namespace base {
-namespace android {
-
-// Registers all JNI bindings necessary for base test support.
-BASE_EXPORT bool RegisterTestSupportJni(JNIEnv* env);
-
-}  // namespace android
-}  // namespace base
-
-#endif  // BASE_TEST_ANDROID_TEST_SUPPORT_JNI_REGISTRAR_H_