Add remoting and PPAPI tests to GN build

remoting/remoting_host_win.gypi

 # 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.
 
 {
   'variables': {
     'remoting_host_installer_win_roots': [
       'host/installer/win/',
     ],
     'remoting_host_installer_win_files': [
       'host/installer/win/chromoting.wxs',
       'host/installer/win/parameters.json',
     ],
   },  # end of 'variables'
 
   'targets': [
     {
       'target_name': 'remoting_breakpad_tester',
       'type': 'executable',
       'variables': { 'enable_wexit_time_destructors': 1, },
       'dependencies': [
         '../base/base.gyp:base',
         'remoting_host',
       ],
       'sources': [
         'tools/breakpad_tester_win.cc',
       ],
     },  # end of target 'remoting_breakpad_tester'
     {
+      # GN version: //remoting/host:remoting_lib_idl
       'target_name': 'remoting_lib_idl',
       'type': 'static_library',
       'sources': [
         'host/win/chromoting_lib_idl.templ',
         '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib.h',
         '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib.idl',
         '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib_i.c',
       ],
       # This target exports a hard dependency because dependent targets may
       # include chromoting_lib.h, a generated header.
       'hard_dependency': 1,
       'msvs_settings': {
         'VCMIDLTool': {
           'OutputDirectory': '<(SHARED_INTERMEDIATE_DIR)/remoting/host',
         },
       },
       'direct_dependent_settings': {
         'include_dirs': [
           '<(SHARED_INTERMEDIATE_DIR)',
         ],
       },
       'rules': [
         {
+          # GN version: //remoting/host:generate_idl
           'rule_name': 'generate_idl',
           'extension': 'templ',
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/remoting/host/chromoting_lib.idl',
           ],
           'action': [
             'python', '<(version_py_path)',
             '-e', "DAEMON_CONTROLLER_CLSID='<(daemon_controller_clsid)'",
             '-e', "RDP_DESKTOP_SESSION_CLSID='<(rdp_desktop_session_clsid)'",
             '<(RULE_INPUT_PATH)',
@@ skipping 311 matching lines @@
         'VCLinkerTool': {
           'IgnoreAllDefaultLibraries': 'true',
           'SubSystem': '1', # /SUBSYSTEM:CONSOLE
           'AdditionalDependencies': [
             'comctl32.lib',
           ],
         },
       },
     },  # end of target 'remoting_it2me_native_messaging_host'
     {
+      # GN version: //remoting/host:messages
       'target_name': 'remoting_host_messages',
       'type': 'none',
       'dependencies': [
         'remoting_resources',
       ],
       'hard_dependency': 1,
       'direct_dependent_settings': {
         'include_dirs': [
           '<(SHARED_INTERMEDIATE_DIR)',
         ],
@@ skipping 225 matching lines @@
 
         {
           'target_name': 'remoting_me2me_host_archive',
           'type': 'none',
         },
       ],  # end of 'targets'
     }],  # 'wix_exists == "True" and sas_dll_exists == "True"'
 
   ],  # end of 'conditions'
 }