Send enter / exit fullscreen signal to AVDA

media/blink/webmediaplayer_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 242 matching lines @@
   friend class WebMediaPlayerImplTest;
   friend class WebMediaPlayerImplBackgroundBehaviorTest;
 
   void EnableOverlay();
   void DisableOverlay();
 
   // Do we have overlay information?  For CVV, this is a surface id.  For
   // AndroidOverlay, this is the routing token.
   bool HaveOverlayInfo();
 
-  // Send the overlay surface ID / routing token to the decoder if we have it
-  // and if it has been requested.
+  // Send OverlayInfo to the decoder.
+  //
+  // If we've requested but not yet received the surface id or routing token, or
+  // if there's no decoder-provided callback to send the overlay info, then this
+  // call will do nothing.
   void MaybeSendOverlayInfoToDecoder();
 
   void OnPipelineSuspended();
   void OnBeforePipelineResume();
   void OnPipelineResumed();
   void OnDemuxerOpened();
 
   // Pipeline::Client overrides.
   void OnError(PipelineStatus status) override;
   void OnEnded() override;
@@ skipping 494 matching lines @@
 
     // Use AndroidOverlay for overlays.
     kUseAndroidOverlay,
   };
 
   OverlayMode overlay_mode_ = OverlayMode::kNoOverlays;
 
   // Optional callback to request the routing token for AndroidOverlay.
   RequestRoutingTokenCallback request_routing_token_cb_;
 
-  // Routing token, if we have one.  No value if we have a request pending to
-  // get it via |request_routing_token_cb_|.  A has_value() is_empty() token
-  // indicates that we requested and received an empty token.  Note that we
-  // can't send an empty token via IPC, so we handle that specially.
-  base::Optional<base::UnguessableToken> overlay_routing_token_;
+  // If |overlay_routing_token_is_pending_| is false, then
+  // |overlay_routing_token_| contains the routing token we should send, if any.
+  // Otherwise, |overlay_routing_token_| is undefined.  We set the flag while
+  // we have a request for the token that hasn't been answered yet; i.e., it
+  // means that we don't know what, if any, token we should be using.
+  bool overlay_routing_token_is_pending_ = false;
+  OverlayInfo::RoutingToken overlay_routing_token_;
+
+  OverlayInfo overlay_info_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_IMPL_H_