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

util/misc/initialization_state_dcheck_test.cc

Index: util/misc/initialization_state_dcheck_test.cc
diff --git a/util/misc/initialization_state_dcheck_test.cc b/util/misc/initialization_state_dcheck_test.cc
index 57a4e54a2bd48ccbaa8ac2b51e20026ea63a3fdc..c9b595ac0a07606809a221e22dc1eadf162c3e39 100644
--- a/util/misc/initialization_state_dcheck_test.cc
+++ b/util/misc/initialization_state_dcheck_test.cc
@@ -17,10 +17,10 @@
 #include "base/logging.h"
 #include "gtest/gtest.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 TEST(InitializationStateDcheck, InitializationStateDcheck) {
   InitializationStateDcheck initialization_state_dcheck;
   INITIALIZATION_STATE_SET_INITIALIZING(initialization_state_dcheck);
@@ -126,3 +126,5 @@ TEST(InitializationStateDcheckDeathTest, Destroyed_NotValid) {
 #endif
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad