Add CdmService to keep track of CDMs

content/content_common.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../cc/cc.gyp:cc',
     '../components/tracing.gyp:tracing',
     '../device/bluetooth/bluetooth.gyp:device_bluetooth',
@@ skipping 78 matching lines @@
   'variables': {
     'use_v4lplugin%': 0,
     'use_v4l2_codec%': 0,
     'public_common_sources': [
       'public/common/appcache_info.h',
       'public/common/bindings_policy.h',
       'public/common/browser_plugin_guest_mode.cc',
       'public/common/browser_plugin_guest_mode.h',
       'public/common/browser_side_navigation_policy.cc',
       'public/common/browser_side_navigation_policy.h',
+      'public/common/cdm_info.h',
+      'public/common/cdm_service.h',
       'public/common/child_process_host.h',
       'public/common/child_process_host_delegate.cc',
       'public/common/child_process_host_delegate.h',
       'public/common/child_process_sandbox_support_linux.h',
       'public/common/color_suggestion.cc',
       'public/common/color_suggestion.h',
       'public/common/common_param_traits.cc',
       'public/common/common_param_traits.h',
       'public/common/common_param_traits_macros.h',
       'public/common/console_message_level.h',
@@ skipping 383 matching lines @@
       'common/inter_process_time_ticks_converter.h',
       'common/mac/attributed_string_coder.h',
       'common/mac/attributed_string_coder.mm',
       'common/mac/font_descriptor.h',
       'common/mac/font_descriptor.mm',
       'common/mac/font_loader.h',
       'common/mac/font_loader.mm',
       'common/manifest_manager_messages.h',
       'common/media/aec_dump_messages.h',
       'common/media/audio_messages.h',
+      'common/media/cdm_info.cc',
       'common/media/cdm_messages.h',
       'common/media/cdm_messages_enums.h',
+      'common/media/cdm_service.cc',
       'common/media/media_param_traits.cc',
       'common/media/media_param_traits.h',
       'common/media/media_player_delegate_messages.h',
       'common/media/media_player_messages_android.h',
       'common/media/media_session_messages_android.h',
       'common/media/media_stream_messages.h',
       'common/media/media_stream_options.cc',
       'common/media/media_stream_options.h',
       'common/media/media_stream_track_metrics_host_messages.h',
       'common/media/midi_messages.h',
@@ skipping 595 matching lines @@
         'common/gpu/client/gpu_memory_buffer_impl_ozone.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.h',
         'common/gpu/gpu_memory_buffer_factory_ozone.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.h',
       ],
     }],
   ],
 }