Move //mojo/examples to //examples

mojo/examples/echo/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("//mojo/public/tools/bindings/mojom.gni")
-
-group("echo") {
-  deps = [
-    ":client",
-    ":service"
-  ]
-}
-
-shared_library("client") {
-  output_name = "echo_client"
-
-  deps = [
-    ":bindings",
-    "//mojo/public/c/system:for_shared_library",
-    "//mojo/public/cpp/application:standalone",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/utility",
-  ]
-
-  sources = [ "echo_client.cc" ]
-}
-
-shared_library("service") {
-  output_name = "echo_service"
-
-  deps = [
-    ":bindings",
-    "//mojo/public/c/system:for_shared_library",
-    "//mojo/public/cpp/application:standalone",
-    "//mojo/public/cpp/bindings",
-    "//mojo/public/cpp/utility",
-  ]
-
-  sources = [ "echo_service.cc" ]
-}
-
-mojom("bindings") {
-  sources = [ "echo_service.mojom" ]
-}