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

util/test/multiprocess_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/test/multiprocess.h"
 
 #include <stdlib.h>
 #include <sys/signal.h>
 #include <unistd.h>
 
 #include "base/basictypes.h"
 #include "gtest/gtest.h"
 #include "util/file/fd_io.h"
 
+namespace crashpad {
+namespace test {
 namespace {
 
-using namespace crashpad;
-using namespace crashpad::test;
-
 class TestMultiprocess final : public Multiprocess {
  public:
   TestMultiprocess() : Multiprocess() {}
 
   ~TestMultiprocess() {}
 
  private:
   // Multiprocess:
 
   virtual void MultiprocessParent() override {
@@ skipping 245 matching lines @@
 }
 
 TEST(MultiprocessDeathTest, ChildClosesReadAndWritePipe) {
   TestMultiprocessClosePipe multiprocess(
       TestMultiprocessClosePipe::kChildCloses,
       TestMultiprocessClosePipe::kReadAndWriteClose);
   multiprocess.Run();
 }
 
 }  // namespace
+}  // namespace test
+}  // namespace crashpad