Add allocator interface for use by cdm_adapter

media/BUILD.gn

 # 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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
@@ skipping 156 matching lines @@
     "capture/video/win/video_capture_device_mf_win.cc",
     "capture/video/win/video_capture_device_mf_win.h",
     "capture/video/win/video_capture_device_win.cc",
     "capture/video/win/video_capture_device_win.h",
     "capture/webm_muxer.cc",
     "capture/webm_muxer.h",
     "cdm/aes_decryptor.cc",
     "cdm/aes_decryptor.h",
     "cdm/cdm_adapter.cc",
     "cdm/cdm_adapter.h",
+    "cdm/cdm_buffer.cc",
+    "cdm/cdm_buffer.h",
+    "cdm/cdm_buffer_allocator.cc",
+    "cdm/cdm_buffer_allocator.h",
+    "cdm/cdm_buffer_allocator_impl.cc",
+    "cdm/cdm_buffer_allocator_impl.h",
     "cdm/cdm_buffer_impl.cc",
     "cdm/cdm_buffer_impl.h",
     "cdm/cdm_helpers.cc",
     "cdm/cdm_helpers.h",
     "cdm/default_cdm_factory.cc",
     "cdm/default_cdm_factory.h",
     "cdm/json_web_key.cc",
     "cdm/json_web_key.h",
     "cdm/key_system_names.cc",
     "cdm/key_system_names.h",
@@ skipping 724 matching lines @@
       "//media/base:test_support",
       "//media/test:pipeline_integration_tests",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/ffmpeg",
       "//ui/gfx:test_support",
       "//ui/gfx/geometry",
     ]
   }
 }