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

util/test/multiprocess.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 15 matching lines @@
 #include "base/memory/scoped_ptr.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/strings/stringprintf.h"
 #include "gtest/gtest.h"
 #include "util/misc/scoped_forbid_return.h"
 #include "util/test/errors.h"
 
 namespace crashpad {
 namespace test {
 
-using namespace testing;
-
 namespace internal {
 
 struct MultiprocessInfo {
   MultiprocessInfo()
       : pipe_c2p_read(-1),
         pipe_c2p_write(-1),
         pipe_p2c_read(-1),
         pipe_p2c_write(-1),
         child_pid(0) {}
 
@@ skipping 156 matching lines @@
 
   // The child uses the write end of c2p and the read end of p2c.
   info_->pipe_c2p_read.reset();
   info_->pipe_p2c_write.reset();
 
   MultiprocessChild();
 
   info_->pipe_c2p_write.reset();
   info_->pipe_p2c_read.reset();
 
-  if (Test::HasFailure()) {
+  if (testing::Test::HasFailure()) {
     // Trigger the ScopedForbidReturn destructor.
     return;
   }
 
   exit(0);
 }
 
 }  // namespace test
 }  // namespace crashpad