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

minidump/minidump_misc_info_writer_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 10 matching lines @@
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "gtest/gtest.h"
 #include "minidump/minidump_file_writer.h"
 #include "minidump/minidump_test_util.h"
 #include "util/file/string_file_writer.h"
 #include "util/stdlib/strlcpy.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-using namespace crashpad::test;
-
 template <typename T>
 void GetMiscInfoStream(const std::string& file_contents, const T** misc_info) {
   const size_t kDirectoryOffset = sizeof(MINIDUMP_HEADER);
   const size_t kMiscInfoStreamOffset =
       kDirectoryOffset + sizeof(MINIDUMP_DIRECTORY);
   const size_t kMiscInfoStreamSize = sizeof(T);
   const size_t kFileSize = kMiscInfoStreamOffset + kMiscInfoStreamSize;
 
   ASSERT_EQ(kFileSize, file_contents.size());
 
@@ skipping 603 matching lines @@
           arraysize(expected.BuildString));
   string16 debug_build_string_utf16 = base::UTF8ToUTF16(kDebugBuildString);
   c16lcpy(expected.DbgBldStr,
           debug_build_string_utf16.c_str(),
           arraysize(expected.DbgBldStr));
 
   ExpectMiscInfoEqual(&expected, observed);
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad