Revert of Add remoting and PPAPI tests to GN build

ppapi/ppapi_tests.gypi

 # Copyright (c) 2012 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': [
     {
-      # GN version: //ppapi:ppapi_tests
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
       'include_dirs': [
         'lib/gl/include',
       ],
       'defines': [
         'GL_GLEXT_PROTOTYPES',
       ],
       'sources': [
         '<@(test_common_source_files)',
@@ skipping 81 matching lines @@
         'proxy/resource_message_test_sink.cc',
         'proxy/resource_message_test_sink.h',
         'shared_impl/test_globals.cc',
         'shared_impl/test_globals.h',
         'shared_impl/unittest_utils.cc',
         'shared_impl/unittest_utils.h',
       ],
     },
 
     {
-      # GN version: //ppapi:ppapi_perftests
       'target_name': 'ppapi_perftests',
       'type': 'executable',
       'variables': {
         'chromium_code': 1,
       },
       'dependencies': [
         'ppapi_proxy',
         'ppapi_shared',
         'ppapi_unittest_shared',
         '../base/base.gyp:test_support_base',
         '../testing/gtest.gyp:gtest',
       ],
       'sources': [
         'proxy/ppapi_perftests.cc',
         'proxy/ppp_messaging_proxy_perftest.cc',
       ],
       'conditions': [
         # See http://crbug.com/162998#c4 for why this is needed.
         ['OS=="linux" and use_allocator!="none"', {
           'dependencies': [
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
     },
     {
-      # GN version: //ppapi:ppapi_unittests
       'target_name': 'ppapi_unittests',
       'type': 'executable',
       'variables': {
         'chromium_code': 1,
       },
       'dependencies': [
         'ppapi_host',
         'ppapi_proxy',
         'ppapi_shared',
         'ppapi_unittest_shared',
         '../base/base.gyp:run_all_unittests',
         '../base/base.gyp:test_support_base',
         '../gpu/gpu.gyp:gpu_ipc',
         '../ipc/ipc.gyp:ipc',
         '../ipc/ipc.gyp:test_support_ipc',
         '../media/media.gyp:shared_memory_support',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../ui/surface/surface.gyp:surface',
       ],
       'sources': [
-        # Note: sources list duplicated in GN build.
         'host/resource_message_filter_unittest.cc',
         'proxy/device_enumeration_resource_helper_unittest.cc',
         'proxy/file_chooser_resource_unittest.cc',
         'proxy/file_system_resource_unittest.cc',
         'proxy/flash_resource_unittest.cc',
         'proxy/interface_list_unittest.cc',
         'proxy/mock_resource.cc',
         'proxy/mock_resource.h',
         'proxy/nacl_message_scanner_unittest.cc',
         'proxy/pdf_resource_unittest.cc',
@@ skipping 447 matching lines @@
       'sources': [
         'examples/compositor/compositor.cc',
         'examples/compositor/spinning_cube.cc',
         'examples/compositor/spinning_cube.h',
       ],
     },
     # Adding a new PPAPI example? Don't forget to update the GN build.
     # See //ppapi/examples/BUILD.gn
   ],
 }