base: Remove unneeded RegisterNatives() calls on Android

url/run_all_unittests.cc

 // 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.
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_io_thread.h"
 #include "base/test/test_suite.h"
 #include "build/build_config.h"
 
-#if defined(OS_ANDROID)
-#include "base/android/jni_android.h"
-#include "base/test/test_file_util.h"
-#endif
-
 #if !defined(OS_IOS)
 #include "mojo/edk/embedder/embedder.h"  // nogncheck
 #include "mojo/edk/test/scoped_ipc_support.h"  // nogncheck
 #endif
 
 int main(int argc, char** argv) {
-#if defined(OS_ANDROID)
-  JNIEnv* env = base::android::AttachCurrentThread();
-  base::RegisterContentUriTestUtils(env);
-#endif
   base::TestSuite test_suite(argc, argv);
 
 #if !defined(OS_IOS)
   mojo::edk::Init();
   base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
   std::unique_ptr<mojo::edk::test::ScopedIPCSupport> ipc_support;
   ipc_support.reset(
       new mojo::edk::test::ScopedIPCSupport(test_io_thread.task_runner()));
 #endif
 
   return base::LaunchUnitTests(
       argc, argv,
       base::Bind(&base::TestSuite::Run, base::Unretained(&test_suite)));
 }