[Presentation API] Resolve PresentationRequest::reconnect() with existing presentation connection i…

third_party/WebKit/Source/modules/presentation/PresentationConnectionCallbacks.h

 // Copyright 2015 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 PresentationConnectionCallbacks_h
 #define PresentationConnectionCallbacks_h
 
 #include "platform/heap/Handle.h"
 #include "public/platform/WebCallbacks.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
+class PresentationConnection;
 class PresentationRequest;
 class ScriptPromiseResolver;
 class WebPresentationConnectionClient;
 struct WebPresentationError;
 
 // PresentationConnectionCallbacks extends WebCallbacks to resolve the
 // underlying promise depending on the result passed to the callback. It takes
 // the PresentationRequest object that originated the call in its constructor
 // and will pass it to the created PresentationConnection.
 class PresentationConnectionCallbacks final
     : public WebCallbacks<std::unique_ptr<WebPresentationConnectionClient>,
                           const WebPresentationError&> {
  public:
   PresentationConnectionCallbacks(ScriptPromiseResolver*, PresentationRequest*);
   ~PresentationConnectionCallbacks() override = default;
 
   void onSuccess(std::unique_ptr<WebPresentationConnectionClient>) override;
   void onError(const WebPresentationError&) override;
 
  private:
   Persistent<ScriptPromiseResolver> m_resolver;
   Persistent<PresentationRequest> m_request;
 
   WTF_MAKE_NONCOPYABLE(PresentationConnectionCallbacks);
 };
 
+// ExistingPresentationConnectionCallbacks extends WebCallbacks to resolve the
+// underlying promise. It takes the PresentationConnection object that
+// originated the call in its constructor and will resolve underlying promise
+// with that object.
+class ExistingPresentationConnectionCallbacks final

[mlamouri (slow - plz ping), 2017/01/03 12:02:11]

Can you create a new file for this callback maybe?

[zhaobin, 2017/01/03 20:12:07]

Done.

+    : public WebCallbacks<std::unique_ptr<WebPresentationConnectionClient>,
+                          const WebPresentationError&> {
+ public:
+  ExistingPresentationConnectionCallbacks(ScriptPromiseResolver*,
+                                          PresentationConnection*);
+  ~ExistingPresentationConnectionCallbacks() override = default;
+
+  void onSuccess(std::unique_ptr<WebPresentationConnectionClient>) override;
+  void onError(const WebPresentationError&) override;
+
+ private:
+  Persistent<ScriptPromiseResolver> m_resolver;
+  Persistent<PresentationConnection> m_connection;
+
+  WTF_MAKE_NONCOPYABLE(ExistingPresentationConnectionCallbacks);
+};
+
 }  // namespace blink
 
 #endif  // PresentationConnectionCallbacks_h