Decryptors can report kNoKey to WebMediaPlayer

media/filters/gpu_video_decoder.cc

Index: media/filters/gpu_video_decoder.cc
diff --git a/media/filters/gpu_video_decoder.cc b/media/filters/gpu_video_decoder.cc
index b634a5c2953eec1025e7b664cfb565afb79a2e03..d9a3bddbe12b9b67e77504a0484fe83aa23fbe04 100644
--- a/media/filters/gpu_video_decoder.cc
+++ b/media/filters/gpu_video_decoder.cc
@@ -141,10 +141,12 @@ std::string GpuVideoDecoder::GetDisplayName() const {
   return kDecoderName;
 }
 
-void GpuVideoDecoder::Initialize(const VideoDecoderConfig& config,
-                                 bool /* low_delay */,
-                                 const PipelineStatusCB& orig_status_cb,
-                                 const OutputCB& output_cb) {
+void GpuVideoDecoder::Initialize(
+    const VideoDecoderConfig& config,
+    bool /* low_delay */,
+    const PipelineStatusCB& orig_status_cb,
+    const OutputCB& output_cb,
+    const base::Closure& /* waiting_for_encryption_key_cb */) {
   DVLOG(3) << "Initialize()";
   DCheckGpuVideoAcceleratorFactoriesTaskRunnerIsCurrent();
   DCHECK(config.IsValidConfig());