"typedef Foo Bar" -> "using Bar = Foo" in //mojo/edk/....

mojo/edk/test/multiprocess_test_helper_unittest.cc

 // Copyright 2013 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 "mojo/edk/test/multiprocess_test_helper.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/test/test_utils.h"
@@ skipping 22 matching lines @@
   BlockingWrite(handle, &c, 1, &bytes_written);
   return bytes_written == 1;
 }
 
 bool ReadByte(const embedder::PlatformHandle& handle, char* c) {
   size_t bytes_read = 0;
   BlockingRead(handle, c, 1, &bytes_read);
   return bytes_read == 1;
 }
 
-typedef testing::Test MultiprocessTestHelperTest;
+using MultiprocessTestHelperTest = testing::Test;
 
 #if defined(OS_ANDROID)
 // Android multi-process tests are not executing the new process. This is flaky.
 #define MAYBE_RunChild DISABLED_RunChild
 #else
 #define MAYBE_RunChild RunChild
 #endif  // defined(OS_ANDROID)
 TEST_F(MultiprocessTestHelperTest, MAYBE_RunChild) {
   MultiprocessTestHelper helper;
   EXPECT_TRUE(helper.server_platform_handle.is_valid());
@@ skipping 131 matching lines @@
   EXPECT_FALSE(MultiprocessTestHelper::client_platform_handle.is_valid())
       << "DISREGARD: Expected failure #1 in child process";
   EXPECT_FALSE(
       IsNonBlocking(MultiprocessTestHelper::client_platform_handle.get()))
       << "DISREGARD: Expected failure #2 in child process";
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo