Remove GTalk Pepper interfaces and related code.

ppapi/ppapi_sources.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.
 
 {
   'variables': {
     'c_source_files': [
       'c/pp_array_output.h',
       'c/pp_bool.h',
       'c/pp_codecs.h',
@@ skipping 552 matching lines @@
       'tests/test_flash_fullscreen_for_browser_ui.cc',
       'tests/test_flash_fullscreen_for_browser_ui.h',
       'tests/test_flash_message_loop.cc',
       'tests/test_flash_message_loop.h',
       'tests/test_net_address_private.cc',
       'tests/test_net_address_private.h',
       'tests/test_pdf.cc',
       'tests/test_pdf.h',
       'tests/test_platform_verification_private.cc',
       'tests/test_platform_verification_private.h',
-      'tests/test_talk_private.cc',
-      'tests/test_talk_private.h',
       'tests/test_tcp_socket_private_trusted.cc',
       'tests/test_tcp_socket_private_trusted.h',
       'tests/test_url_util.cc',
       'tests/test_url_util.h',
       'tests/test_utils.h',
       'tests/test_video_decoder_dev.cc',
       'tests/test_video_decoder_dev.h',
       'tests/test_x509_certificate_private.cc',
       'tests/test_x509_certificate_private.h',
 
       # Deprecated test cases.
       'tests/test_instance_deprecated.cc',
       'tests/test_instance_deprecated.h',
       'tests/test_var_deprecated.cc',
       'tests/test_var_deprecated.h',
     ],
   },
 }