Revert of Adding new media controls to MediaNotification

content/browser/media/session/media_session_impl.cc

Index: content/browser/media/session/media_session_impl.cc
diff --git a/content/browser/media/session/media_session_impl.cc b/content/browser/media/session/media_session_impl.cc
index 7b56e49618c3ff198418fb8706fafdde4b180cdb..022efebc1331af527436b75cc650e019644d8266 100644
--- a/content/browser/media/session/media_session_impl.cc
+++ b/content/browser/media/session/media_session_impl.cc
@@ -6,11 +6,9 @@
 
 #include "content/browser/media/session/audio_focus_delegate.h"
 #include "content/browser/media/session/media_session_player_observer.h"
-#include "content/browser/media/session/media_session_service_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
-#include "content/public/browser/media_session.h"
-#include "content/public/browser/media_session_observer.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_delegate.h"
 #include "media/base/media_content_type.h"
 
 #if defined(OS_ANDROID)
@@ -83,11 +81,6 @@
   players_.clear();
   pepper_players_.clear();
   AbandonSystemAudioFocusIfNeeded();
-}
-
-void MediaSessionImpl::SetMediaSessionService(
-    MediaSessionServiceImpl* service) {
-  service_ = service;
 }
 
 void MediaSessionImpl::AddObserver(MediaSessionObserver* observer) {
@@ -259,24 +252,6 @@
   players_.clear();
 
   AbandonSystemAudioFocusIfNeeded();
-}
-
-void MediaSessionImpl::DidReceiveAction(
-    blink::mojom::MediaSessionAction action) {
-  if (service_)
-    service_->GetClient()->DidReceiveAction(action);
-}
-
-void MediaSessionImpl::OnMediaSessionEnabledAction(
-    blink::mojom::MediaSessionAction action) {
-  for (auto& observer : observers_)
-    observer.MediaSessionEnabledAction(action);
-}
-
-void MediaSessionImpl::OnMediaSessionDisabledAction(
-    blink::mojom::MediaSessionAction action) {
-  for (auto& observer : observers_)
-    observer.MediaSessionDisabledAction(action);
 }
 
 void MediaSessionImpl::StartDucking() {
@@ -424,8 +399,7 @@
       audio_focus_state_(State::INACTIVE),
       audio_focus_type_(
           AudioFocusManager::AudioFocusType::GainTransientMayDuck),
-      is_ducking_(false),
-      service_(nullptr) {
+      is_ducking_(false) {
 #if defined(OS_ANDROID)
   session_android_.reset(new MediaSessionAndroid(this));
 #endif  // defined(OS_ANDROID)