Cast: Refactoring Cast API's

media/cast/audio_sender/audio_encoder.cc

Index: media/cast/audio_sender/audio_encoder.cc
diff --git a/media/cast/audio_sender/audio_encoder.cc b/media/cast/audio_sender/audio_encoder.cc
index 2363619750d6d462c428946cc13b9d28a2c27802..9f9bf6ac8dd30a0cf03e72e88420cf09742d2080 100644
--- a/media/cast/audio_sender/audio_encoder.cc
+++ b/media/cast/audio_sender/audio_encoder.cc
@@ -54,7 +54,7 @@ class AudioEncoder::ImplBase : public base::SupportsWeakPtr<ImplBase> {
             transport::EncodedAudioFrame::kMaxNumberOfSamples) {
       initialization_status_ = STATUS_INVALID_AUDIO_CONFIGURATION;
     } else {
-      initialization_status_ = STATUS_INITIALIZED;
+      initialization_status_ = STATUS_AUDIO_INITIALIZED;
     }
   }
 
@@ -192,7 +192,7 @@ class AudioEncoder::OpusImpl : public AudioEncoder::ImplBase {
         encoder_memory_(new uint8[opus_encoder_get_size(num_channels)]),
         opus_encoder_(reinterpret_cast<OpusEncoder*>(encoder_memory_.get())),
         buffer_(new float[num_channels * samples_per_10ms_]) {
-    if (ImplBase::initialization_status_ != STATUS_INITIALIZED) {
+    if (ImplBase::initialization_status_ != STATUS_AUDIO_INITIALIZED) {
       return;
     }
 
@@ -316,7 +316,6 @@ AudioEncoder::AudioEncoder(
   // Note: It doesn't matter which thread constructs AudioEncoder, just so long
   // as all calls to InsertAudio() are by the same thread.
   insert_thread_checker_.DetachFromThread();
-
   switch (audio_config.codec) {
     case transport::kOpus:
       impl_.reset(new OpusImpl(cast_environment,
@@ -340,6 +339,7 @@ AudioEncoder::AudioEncoder(
 AudioEncoder::~AudioEncoder() {}
 
 CastInitializationStatus AudioEncoder::InitializationResult() const {
+  DCHECK(insert_thread_checker_.CalledOnValidThread());
   if (impl_) {
     return impl_->InitializationResult();
   }