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

util/mach/exception_ports_test.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,
@@ skipping 15 matching lines @@
 #include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 #include "util/file/fd_io.h"
 #include "util/mach/exc_server_variants.h"
 #include "util/mach/mach_extensions.h"
 #include "util/misc/scoped_forbid_return.h"
 #include "util/synchronization/semaphore.h"
 #include "util/test/mac/mach_errors.h"
 #include "util/test/mac/mach_multiprocess.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-using namespace crashpad::test;
-
 // Calls GetExceptionPorts() on its |exception_ports| argument to look up the
 // EXC_MASK_CRASH handler. If |expect_port| is not MACH_PORT_NULL, it expects to
 // find a handler for this mask whose port matches |expect_port| and whose
 // behavior matches |expect_behavior| exactly. In this case, if
 // |expect_behavior| is a state-carrying behavior, the looked-up thread state
 // flavor is expected to be MACHINE_THREAD_STATE, otherwise, it is expected to
 // be THREAD_STATE_NONE. If |expect_port| is MACH_PORT_NULL, no handler for
 // EXC_MASK_CRASH is expected to be found.
 //
 // A second GetExceptionPorts() lookup is also performed on a wider exception
@@ skipping 516 matching lines @@
   rv = implicit_host_ports.GetExceptionPorts(
       ExcMaskAll() | EXC_MASK_CRASH, &handlers);
   if (geteuid() == 0) {
     EXPECT_TRUE(rv);
   } else {
     EXPECT_FALSE(rv);
   }
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad