Fixed missing std namespaces and make_unique.

cout/endl were missing the std namespace. Also std::make_unique
was used inadvertently which is part of C++14 and only C++11
is currently supported.

PiperOrigin-RevId: 243221310

issues/issue320_test.cc

@@ -66,26 +66,28 @@ TEST(Issue320, Test) {
   ReadOptions readOptions;
   while (count < 200000) {
     if ((++count % 1000) == 0) {
-      cout << "count: " << count << endl;
+      std::cout << "count: " << count << std::endl;
     }
 
     int index = GenerateRandomNumber(test_map.size());
     WriteBatch batch;
 
     if (test_map[index] == nullptr) {
       num_items++;
-      test_map[index] = std::make_unique<std::pair<std::string, std::string>>(
-          CreateRandomString(index), CreateRandomString(index));
+      test_map[index].reset(new std::pair<std::string, std::string>(
+          CreateRandomString(index), CreateRandomString(index)));
       batch.Put(test_map[index]->first, test_map[index]->second);
     } else {
       ASSERT_OK(db->Get(readOptions, test_map[index]->first, &old_value));
       if (old_value != test_map[index]->second) {
-        cout << "ERROR incorrect value returned by Get" << endl;
-        cout << "  count=" << count << endl;
-        cout << "  old value=" << old_value << endl;
-        cout << "  test_map[index]->second=" << test_map[index]->second << endl;
-        cout << "  test_map[index]->first=" << test_map[index]->first << endl;
-        cout << "  index=" << index << endl;
+        std::cout << "ERROR incorrect value returned by Get" << std::endl;
+        std::cout << "  count=" << count << std::endl;
+        std::cout << "  old value=" << old_value << std::endl;
+        std::cout << "  test_map[index]->second=" << test_map[index]->second
+                  << std::endl;
+        std::cout << "  test_map[index]->first=" << test_map[index]->first
+                  << std::endl;
+        std::cout << "  index=" << index << std::endl;
         ASSERT_EQ(old_value, test_map[index]->second);
       }