mojo: Create a basic clipboard.

mojo/services/clipboard/BUILD.gn

Index: mojo/services/clipboard/BUILD.gn
diff --git a/mojo/services/clipboard/BUILD.gn b/mojo/services/clipboard/BUILD.gn
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+# 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.
+
+# GYP version: mojo/mojo_services.gypi:mojo_clipboard
+component("clipboard") {
+  deps = [
+    "//base",
+    "//mojo/common",
+    "//mojo/environment:chromium",
+    "//mojo/public/c/system:for_component",
+    "//mojo/services/public/interfaces/clipboard",
+    "//ui/base",
+  ]
+
+  sources = [
+    "clipboard_standalone_impl.cc",
+    "clipboard_standalone_impl.h",
+    "main.cc",
+  ]
+}
+
+# GYP version: mojo/mojo_services.gypi:mojo_clipboard_unittests
+test("mojo_clipboard_unittests") {
+  deps = [
+    "//base",
+    "//base/test:test_support",
+    "//mojo/application",
+    "//mojo/application_manager",
+    "//mojo/common",
+    "//mojo/common/test:run_all_unittests",
+    "//mojo/environment:chromium",
+    "//mojo/services/public/interfaces/clipboard:clipboard",
+    "//mojo/shell:test_support",
+    "//mojo/system",
+    "//testing/gtest",
+  ]
+
+  sources = [
+    "clipboard_standalone_unittest.cc",
+  ]
+}