AndroidOverlay implementation using Dialog.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 679773f82aca83ced3397903a82c2e4dd7c899e6..1134931f8ae975839622693a21292852be0cafb3 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1613,6 +1613,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_GetNearestFindResult,
                         OnGetNearestFindResult)
     IPC_MESSAGE_HANDLER(FrameMsg_FindMatchRects, OnFindMatchRects)
+    IPC_MESSAGE_HANDLER(FrameMsg_SetOverlayRoutingToken,
+                        OnSetOverlayRoutingToken)
 #endif
 
 #if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)
@@ -5847,6 +5849,27 @@ void RenderFrameImpl::OnFindMatchRects(int current_version) {
   Send(new FrameHostMsg_FindMatchRects_Reply(routing_id_, rects_version,
                                              match_rects, active_rect));
 }
+
+void RenderFrameImpl::OnSetOverlayRoutingToken(uint64_t high, uint64_t low) {
+  overlay_routing_token_ = base::UnguessableToken::Deserialize(high, low);
+  for (const auto& cb : pending_routing_token_callbacks_)
+    cb.Run(overlay_routing_token_.value());
+  pending_routing_token_callbacks_.clear();
+}
+
+void RenderFrameImpl::GetOverlayRoutingToken(
+    const media::RoutingTokenCallback& callback) {
+  if (overlay_routing_token_.has_value()) {
+    callback.Run(overlay_routing_token_.value());
+    return;
+  }
+
+  // Send a request to the host for the token.  We'll notify |callback| when it
+  // arrives later.
+  Send(new FrameHostMsg_RequestOverlayRoutingToken(routing_id_));
+
+  pending_routing_token_callbacks_.push_back(callback);
+}
 #endif
 
 #if BUILDFLAG(USE_EXTERNAL_POPUP_MENU)