media: Remove SetCdmReadyCB and CdmReadyCB (part 1).

content/common/gpu/media/video_encode_accelerator_unittest.cc

 // Copyright 2013 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.
 
 #include <inttypes.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <algorithm>
 #include <queue>
 #include <string>
@@ skipping 661 matching lines @@
                       media::COLOR_SPACE_UNSPECIFIED, coded_size, visible_size,
                       natural_size, media::EmptyExtraData(), false);
   else if (IsH264(profile_))
     config.Initialize(media::kCodecH264, media::H264PROFILE_MAIN, kInputFormat,
                       media::COLOR_SPACE_UNSPECIFIED, coded_size, visible_size,
                       natural_size, media::EmptyExtraData(), false);
   else
     LOG_ASSERT(0) << "Invalid profile " << profile_;
 
   decoder_->Initialize(
-      config, false, media::SetCdmReadyCB(),
+      config, false, nullptr,
       base::Bind(&VideoFrameQualityValidator::InitializeCB,
                  base::Unretained(this)),
       base::Bind(&VideoFrameQualityValidator::VerifyOutputFrame,
                  base::Unretained(this)));
 }
 
 void VideoFrameQualityValidator::InitializeCB(bool success) {
   if (success) {
     decoder_state_ = INITIALIZED;
     Decode();
@@ skipping 1090 matching lines @@
 
   content::g_env =
       reinterpret_cast<content::VideoEncodeAcceleratorTestEnvironment*>(
           testing::AddGlobalTestEnvironment(
               new content::VideoEncodeAcceleratorTestEnvironment(
                   std::move(test_stream_data), log_path, run_at_fps,
                   needs_encode_latency, verify_all_output)));
 
   return RUN_ALL_TESTS();
 }