[chrome.displaySource] Use WDS for Wi-Fi Display implementation

extensions/renderer/api/display_source/wifi_display/wifi_display_session.h

Index: extensions/renderer/api/display_source/wifi_display/wifi_display_session.h
diff --git a/extensions/renderer/api/display_source/wifi_display/wifi_display_session.h b/extensions/renderer/api/display_source/wifi_display/wifi_display_session.h
index 5d1030889d51f5bb93a0308c19b982f9f9bb1ed7..aa5fa3a8091e752147aa46d8c5684b865825e83b 100644
--- a/extensions/renderer/api/display_source/wifi_display/wifi_display_session.h
+++ b/extensions/renderer/api/display_source/wifi_display/wifi_display_session.h
@@ -5,16 +5,26 @@
 #ifndef EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_SESSION_H_
 #define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_SESSION_H_
 
+#include <map>
 #include <string>
 
 #include "extensions/common/mojo/wifi_display_session_service.mojom.h"
 #include "extensions/renderer/api/display_source/display_source_session.h"
 #include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/wds/src/libwds/public/source.h"
+
+namespace base {
+class Timer;
+}  // namespace base
 
 namespace extensions {
 
+class WiFiDisplayMediaManager;
+
 class WiFiDisplaySession: public DisplaySourceSession,
-                          public WiFiDisplaySessionServiceClient {
+                          public WiFiDisplaySessionServiceClient,
+                          public wds::Peer::Delegate,
+                          public wds::Peer::Observer {
  public:
   explicit WiFiDisplaySession(
       const DisplaySourceSessionParams& params);
@@ -31,13 +41,28 @@ class WiFiDisplaySession: public DisplaySourceSession,
   void OnError(int32_t type, const mojo::String& description) override;
   void OnMessage(const mojo::String& data) override;
 
+  // wds::Peer::Delegate overrides.
+  uint CreateTimer(int seconds) override;
+  void ReleaseTimer(uint timer_id) override;
+  void SendRTSPData(const std::string& message) override;
+  std::string GetLocalIPAddress() const override;
+  int GetNextCSeq(int* initial_peer_cseq = nullptr) const override;
+
+  // wds::Peer::Observer overrides.
+  void ErrorOccurred(wds::ErrorType error) override;
+  void SessionCompleted() override;
+
   // A connection error handler for the mojo objects used in this class.
-  void OnConnectionError();
+  void OnIPCConnectionError();
 
  private:
+  scoped_ptr<wds::Source> wfd_source_;
+  scoped_ptr<WiFiDisplayMediaManager> media_manager_;
   WiFiDisplaySessionServicePtr service_;
   mojo::Binding<WiFiDisplaySessionServiceClient> binding_;
   std::string ip_address_;
+  std::map<uint, scoped_ptr<base::Timer>> timers_;
+
   DisplaySourceSessionParams params_;
   base::WeakPtrFactory<WiFiDisplaySession> weak_factory_;