Adding new media controls to MediaNotification

content/browser/media/session/media_session.cc

Index: content/browser/media/session/media_session.cc
diff --git a/content/browser/media/session/media_session.cc b/content/browser/media/session/media_session.cc
index ea25caad4df7d8adeb230f46523aa00d64e6c3d1..1d9a38018f7be7d58dd1f8328aa0d6082286816c 100644
--- a/content/browser/media/session/media_session.cc
+++ b/content/browser/media/session/media_session.cc
@@ -6,6 +6,7 @@
 
 #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/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
@@ -72,6 +73,10 @@ void MediaSession::WebContentsDestroyed() {
   AbandonSystemAudioFocusIfNeeded();
 }
 
+void MediaSession::SetMediaSessionService(MediaSessionServiceImpl* service) {
+  service_ = service;
+}
+
 void MediaSession::SetMetadata(const base::Optional<MediaMetadata>& metadata) {
   metadata_ = metadata;
   static_cast<WebContentsImpl*>(web_contents())
@@ -234,6 +239,23 @@ void MediaSession::Stop(SuspendType suspend_type) {
   AbandonSystemAudioFocusIfNeeded();
 }
 
+void MediaSession::OnMediaSessionEnabledAction(
+    blink::mojom::MediaSessionAction action) {
+  static_cast<WebContentsImpl*>(web_contents())
+      ->OnMediaSessionEnabledAction(action);
+}
+
+void MediaSession::OnMediaSessionDisabledAction(
+    blink::mojom::MediaSessionAction action) {
+  static_cast<WebContentsImpl*>(web_contents())
+      ->OnMediaSessionDisabledAction(action);
+}
+
+void MediaSession::DidReceiveAction(blink::mojom::MediaSessionAction action) {
+  if (service_)
+    service_->GetClient()->DidReceiveAction(action);
+}
+
 void MediaSession::StartDucking() {
   if (is_ducking_)
     return;
@@ -379,7 +401,8 @@ MediaSession::MediaSession(WebContents* web_contents)
       audio_focus_state_(State::INACTIVE),
       audio_focus_type_(
           AudioFocusManager::AudioFocusType::GainTransientMayDuck),
-      is_ducking_(false) {}
+      is_ducking_(false),
+      service_(nullptr) {}
 
 void MediaSession::Initialize() {
   delegate_ = AudioFocusDelegate::Create(this);