media: CHECK AVDATimerManager construction task runner is not null

content/common/gpu/media/android_video_decode_accelerator.cc

Index: content/common/gpu/media/android_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/android_video_decode_accelerator.cc b/content/common/gpu/media/android_video_decode_accelerator.cc
index f6f30f55e0389b6b84baf3f3e3a1b5e47ae743da..ee5a942c4463744aab80cbd2735568feadde7305 100644
--- a/content/common/gpu/media/android_video_decode_accelerator.cc
+++ b/content/common/gpu/media/android_video_decode_accelerator.cc
@@ -952,8 +952,12 @@ void AndroidVideoDecodeAccelerator::ConfigureMediaCodecAsynchronously() {
     strategy_->CodecChanged(nullptr, output_picture_buffers_);
   }
 
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner =
+      g_avda_timer.Pointer()->ConstructionTaskRunner();
+  CHECK(task_runner);
+
   base::PostTaskAndReplyWithResult(
-      g_avda_timer.Pointer()->ConstructionTaskRunner().get(), FROM_HERE,
+      task_runner.get(), FROM_HERE,
       base::Bind(&AndroidVideoDecodeAccelerator::ConfigureMediaCodecOnAnyThread,
                  codec_config_),
       base::Bind(&AndroidVideoDecodeAccelerator::OnCodecConfigured,