Bug 1371200. P3 - remove unused code. r=cpearce

MozReview-Commit-ID: JVmmKSAQl3q

--HG--
extra : rebase_source : b4a727b9c631fc85d12abb84d2b91b31923093eb
extra : source : 79cbb22b4a53945dcff3046b27dac617c8dac51a

dom/media/MediaDecoder.cpp

@@ -682,18 +682,6 @@ MediaDecoder::SetStateMachineParameters()
     mAbstractMainThread, this, &MediaDecoder::OnMediaNotSeekable);
 }
 
-void
-MediaDecoder::SetMinimizePrerollUntilPlaybackStarts()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-  LOG("SetMinimizePrerollUntilPlaybackStarts()");
-  mMinimizePreroll = true;
-
-  // This needs to be called before we init the state machine, otherwise it will
-  // have no effect.
-  MOZ_DIAGNOSTIC_ASSERT(!mDecoderStateMachine);
-}
-
 nsresult
 MediaDecoder::Play()
 {

dom/media/MediaDecoder.h

@@ -228,11 +228,6 @@ public:
   virtual void SetPlaybackRate(double aPlaybackRate);
   void SetPreservesPitch(bool aPreservesPitch);
 
-  // Directs the decoder to not preroll extra samples until the media is
-  // played. This reduces the memory overhead of media elements that may
-  // not be played. Note that seeking also doesn't cause us start prerolling.
-  void SetMinimizePrerollUntilPlaybackStarts();
-
   bool GetMinimizePreroll() const { return mMinimizePreroll; }
 
   // All MediaStream-related data is protected by mReentrantMonitor.
@@ -385,7 +380,6 @@ private:
   // to buffer, given the current download and playback rates.
   virtual bool CanPlayThrough();
 
-  void SetAudioChannel(dom::AudioChannel aChannel) { mAudioChannel = aChannel; }
   dom::AudioChannel GetAudioChannel() { return mAudioChannel; }
 
   // Called from HTMLMediaElement when owner document activity changes