Bug 1702033 - Remove some dead audio volume-related code in nsPIDOMWindow. r=alwu

Differential Revision: https://phabricator.services.mozilla.com/D110296

dom/audiochannel/AudioChannelService.cpp

@@ -266,7 +266,6 @@ AudioPlaybackConfig AudioChannelService::GetMediaConfig(
       config.mCapturedAudio = winData->mIsAudioCaptured;
     }
 
-    config.mVolume *= window->GetAudioVolume();
     config.mMuted = config.mMuted || window->GetAudioMuted();
     if (window->GetMediaSuspend() != nsISuspendedTypes::NONE_SUSPENDED) {
       config.mSuspend = window->GetMediaSuspend();

dom/base/nsGlobalWindowOuter.cpp

@@ -3067,29 +3067,14 @@ void nsPIDOMWindowOuter::MaybeNotifyMediaResumedFromBlock(
 
 bool nsPIDOMWindowOuter::GetAudioMuted() const {
   BrowsingContext* bc = GetBrowsingContext();
-  return bc ? bc->Top()->GetMuted() : false;
-}
-
-float nsPIDOMWindowOuter::GetAudioVolume() const { return mAudioVolume; }
-
-nsresult nsPIDOMWindowOuter::SetAudioVolume(float aVolume) {
-  if (aVolume < 0.0) {
-    return NS_ERROR_DOM_INDEX_SIZE_ERR;
-  }
-
-  if (mAudioVolume == aVolume) {
-    return NS_OK;
-  }
-
-  mAudioVolume = aVolume;
-  RefreshMediaElementsVolume();
-  return NS_OK;
+  return bc && bc->Top()->GetMuted();
 }
 
 void nsPIDOMWindowOuter::RefreshMediaElementsVolume() {
   RefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
   if (service) {
-    service->RefreshAgentsVolume(this, GetAudioVolume(), GetAudioMuted());
+    // TODO: RefreshAgentsVolume can probably be simplified further.
+    service->RefreshAgentsVolume(this, 1.0f, GetAudioMuted());
   }
 }
 
@@ -7659,7 +7644,6 @@ nsPIDOMWindowOuter::nsPIDOMWindowOuter(uint64_t aWindowID)
       mMediaSuspend(StaticPrefs::media_block_autoplay_until_in_foreground()
                         ? nsISuspendedTypes::SUSPENDED_BLOCK
                         : nsISuspendedTypes::NONE_SUSPENDED),
-      mAudioVolume(1.0),
       mDesktopModeViewport(false),
       mIsRootOuterWindow(false),
       mInnerWindow(nullptr),

dom/base/nsPIDOMWindow.h

@@ -780,9 +780,6 @@ class nsPIDOMWindowOuter : public mozIDOMWindowProxy {
 
   bool GetAudioMuted() const;
 
-  float GetAudioVolume() const;
-  nsresult SetAudioVolume(float aVolume);
-
   void MaybeActiveMediaComponents();
 
   void RefreshMediaElementsVolume();
@@ -1137,9 +1134,6 @@ class nsPIDOMWindowOuter : public mozIDOMWindowProxy {
    */
   SuspendTypes mMediaSuspend;
 
-  bool mAudioMuted;
-  float mAudioVolume;
-
   // current desktop mode flag.
   bool mDesktopModeViewport;