Add CdmFileIOProvider 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 60 matching lines @@
 }
 
 component("media") {
   sources = [
     "cdm/aes_decryptor.cc",
     "cdm/aes_decryptor.h",
     "cdm/cdm_adapter.cc",
     "cdm/cdm_adapter.h",
     "cdm/cdm_allocator.cc",
     "cdm/cdm_allocator.h",
+    "cdm/cdm_file_io.cc",
+    "cdm/cdm_file_io.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",
     "cdm/player_tracker_impl.cc",
     "cdm/player_tracker_impl.h",
@@ skipping 734 matching lines @@
 fuzzer_test("media_vp9_parser_fuzzer") {
   sources = [
     "filters/vp9_parser_fuzzertest.cc",
   ]
   deps = [
     ":media",
     "//base",
   ]
   libfuzzer_options = [ "max_len = 400000" ]
 }