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

util/mac/process_types_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,
 // 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/mac/process_types.h"
 
 #include <AvailabilityMacros.h>
 #include <mach/mach.h>
 #include <string.h>
 
 #include <vector>
 
 #include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 #include "util/mac/mac_util.h"
 #include "util/test/mac/dyld.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 #define TEST_STRING(process_reader, self_view, proctype_view, field)        \
   do {                                                                      \
     if (self_view->field) {                                                 \
       std::string proctype_string;                                          \
       ASSERT_TRUE(process_reader.Memory()->ReadCString(proctype_view.field, \
                                                        &proctype_string));  \
       EXPECT_EQ(self_view->field, proctype_string);                         \
     }                                                                       \
   } while (false)
 
@@ skipping 210 matching lines @@
                 memcmp(self_uuid_info->imageUUID,
                        proctype_uuid_info.imageUUID,
                        sizeof(self_uuid_info->imageUUID)))
           << "index " << index;
     }
   }
 #endif
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad