Deletes remaining traces of gyp in services/ and mojo/

services/tracing/tracing.gyp

-# Copyright 2016 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'tracing_interfaces',
-      'type': 'none',
-      'variables': {
-        'mojom_files': [
-          'public/interfaces/tracing.mojom',
-        ],
-        'mojom_include_path': '<(DEPTH)/mojo/services',
-        'use_new_wrapper_types': 'false',
-      },
-      'includes': [
-        '../../mojo/mojom_bindings_generator_explicit.gypi',
-      ],
-    },
-    {
-      # Technically, these should be in the mojo_services.gyp, but this causes
-      # a cycle since the ios generator can't have gyp files refer to each
-      # other, even if the targets don't form a cycle.
-      #
-      # GN version: //services/tracing:lib
-      'target_name': 'tracing_lib',
-      'type': 'static_library',
-      'dependencies': [
-        'tracing_public',
-        '../../mojo/mojo_edk.gyp:mojo_system_impl',
-        '../shell/shell_public.gyp:shell_public',
-      ],
-      'sources': [
-        'trace_data_sink.cc',
-        'trace_data_sink.h',
-        'trace_recorder_impl.cc',
-        'trace_recorder_impl.h',
-        'tracing_app.cc',
-        'tracing_app.h',
-      ],
-    },
-    {
-      # GN version: //mojo/services/public/cpp
-      'target_name': 'tracing_public',
-      'type': 'static_library',
-      'dependencies': [
-        'tracing_interfaces',
-        '../../mojo/mojo_edk.gyp:mojo_system_impl',
-        '../shell/shell_public.gyp:shell_public',
-      ],
-      'sources': [
-        'public/cpp/switches.cc',
-        'public/cpp/switches.h',
-        'public/cpp/tracing_impl.cc',
-        'public/cpp/tracing_impl.h',
-        'public/cpp/trace_provider_impl.cc',
-        'public/cpp/trace_provider_impl.h',
-      ],
-    },
-  ],
-}