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

util/misc/initialization_state_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/misc/initialization_state.h"
 
 #include "gtest/gtest.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-
 TEST(InitializationState, InitializationState) {
   InitializationState* initialization_state_pointer;
   {
     InitializationState initialization_state;
     initialization_state_pointer = &initialization_state;
 
     EXPECT_TRUE(initialization_state.is_uninitialized());
     EXPECT_FALSE(initialization_state.is_valid());
 
     initialization_state.set_invalid();
@@ skipping 14 matching lines @@
   // former home in memory.
   //
   // This portion of the test is technically not valid C++, but it exists to
   // test that the behavior is as desired when other code uses the language
   // improperly.
   EXPECT_FALSE(initialization_state_pointer->is_uninitialized());
   EXPECT_FALSE(initialization_state_pointer->is_valid());
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad