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

util/misc/initialization_state_test.cc

Index: util/misc/initialization_state_test.cc
diff --git a/util/misc/initialization_state_test.cc b/util/misc/initialization_state_test.cc
index 8330f30130497bca4cd6c8f185f2c94afa48c71d..d427a140dd732f69bd323b9c9d19731ccf7ceac5 100644
--- a/util/misc/initialization_state_test.cc
+++ b/util/misc/initialization_state_test.cc
@@ -16,10 +16,10 @@
 
 #include "gtest/gtest.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 TEST(InitializationState, InitializationState) {
   InitializationState* initialization_state_pointer;
   {
@@ -54,3 +54,5 @@ TEST(InitializationState, InitializationState) {
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad