Don’t use using directives (“using namespace”) in tests

util/test/multiprocess_exec.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/test/multiprocess_exec.h"
 
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "base/posix/eintr_wrapper.h"
 #include "gtest/gtest.h"
 #include "util/misc/scoped_forbid_return.h"
 #include "util/test/errors.h"
 #include "util/test/posix/close_multiple.h"
 
 namespace crashpad {
 namespace test {
 
-using namespace testing;
-
 MultiprocessExec::MultiprocessExec()
     : Multiprocess(),
       command_(),
       arguments_(),
       argv_() {
 }
 
 void MultiprocessExec::SetChildCommand(
     const std::string& command, const std::vector<std::string>* arguments) {
   command_ = command;
@@ skipping 94 matching lines @@
   IGNORE_EINTR(close(STDOUT_FILENO));
   HANDLE_EINTR(dup2(dup_orig_stdout_fd, STDOUT_FILENO));
   IGNORE_EINTR(close(dup_orig_stdout_fd));
 
   forbid_return.Disarm();
   FAIL() << ErrnoMessage("execv") << ": " << argv_[0];
 }
 
 }  // namespace test
 }  // namespace crashpad