Fix lifetime of leveldb::MojoEnv instances.

content/test/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 1455 matching lines @@
     ":content_test_mojo_bindings",
     ":content_unittests_catalog_source",
     ":test_support",
     "//base/test:test_support",
     "//base/third_party/dynamic_annotations",
     "//cc",
     "//cc:test_support",
     "//cc/ipc",
     "//cc/surfaces",
     "//components/display_compositor",
+    "//components/leveldb:lib",
     "//components/leveldb/public/cpp",
     "//components/payments/content:mojom",
     "//components/payments/content:mojom_payment_app",
     "//components/rappor:test_support",
     "//content:resources",
     "//content/app:both_for_content_tests",
     "//content/browser:for_content_tests",
     "//content/browser/cache_storage:cache_storage_proto",
     "//content/browser/dom_storage:local_storage_proto",
     "//content/browser/notifications:notification_proto",
@@ skipping 374 matching lines @@
   if (is_android) {
     deps += [ "//testing/android/native_test:native_test_native_code" ]
   }
 }
 
 group("fuzzers") {
   deps = [
     "//content/test/fuzzer",
   ]
 }