Mojo Log service and a thread-safe client library.

services/log/BUILD.gn

+# Copyright 2015 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("//mojo/public/mojo_application.gni")
+
+source_set("log_impl") {
+  sources = [
+    "log_impl.cc",
+    "log_impl.h",
+  ]
+
+  deps = [
+    "//base",
+    "//mojo/public/cpp/application",
+    "//mojo/services/log/interfaces",
+  ]
+}
+
+mojo_native_application("log") {
+  sources = [
+    "main.cc",
+  ]
+
+  deps = [
+    ":log_impl",
+    "//mojo/application",
+    "//mojo/services/log/interfaces",
+  ]
+}
+
+mojo_native_application("apptests") {
+  output_name = "log_impl_apptests"
+
+  testonly = true
+
+  sources = [
+    "log_impl_unittest.cc",
+  ]
+
+  deps = [
+    ":log_impl",
+    "//base",
+    "//mojo/application",
+    "//mojo/application:test_support",
+    "//mojo/public/cpp/bindings",
+    "//mojo/services/log/interfaces",
+    "//testing/gtest",
+    "//base/test:test_config",
+  ]
+}