Refactoring: Merge VideoSenderConfig and AudioSenderConfig.

media/cast/sender/video_encoder_impl.cc

Index: media/cast/sender/video_encoder_impl.cc
diff --git a/media/cast/sender/video_encoder_impl.cc b/media/cast/sender/video_encoder_impl.cc
index 3a8042b87e69ddec534baca5e98ac2cabb297c03..4165172969020f2921fcb8e130dddecaabd9cdb5 100644
--- a/media/cast/sender/video_encoder_impl.cc
+++ b/media/cast/sender/video_encoder_impl.cc
@@ -51,7 +51,7 @@ void EncodeVideoFrameOnEncoderThread(
 }  // namespace
 
 // static
-bool VideoEncoderImpl::IsSupported(const VideoSenderConfig& video_config) {
+bool VideoEncoderImpl::IsSupported(const FrameSenderConfig& video_config) {
 #ifndef OFFICIAL_BUILD
   if (video_config.codec == CODEC_VIDEO_FAKE)
     return true;
@@ -61,7 +61,7 @@ bool VideoEncoderImpl::IsSupported(const VideoSenderConfig& video_config) {
 
 VideoEncoderImpl::VideoEncoderImpl(
     scoped_refptr<CastEnvironment> cast_environment,
-    const VideoSenderConfig& video_config,
+    const FrameSenderConfig& video_config,
     const StatusChangeCallback& status_change_cb)
     : cast_environment_(cast_environment) {
   CHECK(cast_environment_->HasVideoThread());