Remove mojo/shell and (most) service implementations

mojo/examples/pepper_container_app/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.
 
+if (!is_component_build) {
+
 shared_library("pepper_container_app") {
   output_name = "mojo_pepper_container_app"
 
   sources = [
     # Source files from ppapi/.
     # An alternative is to depend on
     # "//ppapi/ppapi_shared', but that target includes
     # a lot of things that we don't need.
     # TODO(yzshen): Consider extracting these files into a separate target
     # which mojo_pepper_container_app and ppapi_shared both depend on.
@@ skipping 78 matching lines @@
     "//mojo/application",
     "//mojo/common",
     "//mojo/public/c/system:for_shared_library",
     "//mojo/public/gles2:for_shared_library",
     "//mojo/services/public/interfaces/geometry",
     "//mojo/services/public/interfaces/gpu",
     "//mojo/services/public/interfaces/native_viewport",
     "//ui/events:events_base",
   ]
 }
+
+}  # if (!is_component_build)