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

util/stdlib/strlcpy_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/stdlib/strlcpy.h"
 
 #include <string.h>
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 TEST(strlcpy, c16lcpy) {
   // Use a destination buffer that’s larger than the length passed to c16lcpy.
   // The unused portion is a guard area that must not be written to.
   struct TestBuffer {
     char16 lead_guard[64];
     char16 data[128];
     char16 trail_guard[64];
   };
   TestBuffer expected_untouched;
   memset(&expected_untouched, 0xa5, sizeof(expected_untouched));
@@ skipping 42 matching lines @@
                           &destination.data[expected_destination_length + 1],
                           expected_untouched_length) == 0);
       EXPECT_TRUE(base::c16memcmp(expected_untouched.trail_guard,
                                   destination.trail_guard,
                                   arraysize(destination.trail_guard)) == 0);
     }
   }
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad