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

minidump/minidump_module_writer_test.cc

Index: minidump/minidump_module_writer_test.cc
diff --git a/minidump/minidump_module_writer_test.cc b/minidump/minidump_module_writer_test.cc
index 296de79369a721ac01875256b62a5a936087ff30..53bf9d7856427f3ca6b33962c49be5f2a41e6c2d 100644
--- a/minidump/minidump_module_writer_test.cc
+++ b/minidump/minidump_module_writer_test.cc
@@ -26,11 +26,10 @@
 #include "util/file/string_file_writer.h"
 #include "util/misc/uuid.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-using namespace crashpad::test;
-
 void GetModuleListStream(const std::string& file_contents,
                          const MINIDUMP_MODULE_LIST** module_list) {
   const size_t kDirectoryOffset = sizeof(MINIDUMP_HEADER);
@@ -672,3 +671,5 @@ TEST(MinidumpSystemInfoWriterDeathTest, NoModuleName) {
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad