Revert of [Presentation API / Media Router] Clean up default pres URL logic.

chrome/browser/media/router/create_presentation_session_request.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 CHROME_BROWSER_MEDIA_ROUTER_CREATE_PRESENTATION_SESSION_REQUEST_H_
+#define CHROME_BROWSER_MEDIA_ROUTER_CREATE_PRESENTATION_SESSION_REQUEST_H_
+
+#include <string>
+
+#include "chrome/browser/media/router/media_route.h"
+#include "chrome/browser/media/router/media_source.h"
+#include "content/public/browser/presentation_service_delegate.h"
+#include "url/gurl.h"
+
+namespace content {
+struct PresentationError;
+struct PresentationSessionInfo;
+}  // namespace content
+
+namespace media_router {
+
+// Holds parameters for creating a presentation session.
+// A request object is created by presentation_service_delegate_impl when it
+// gets create-session request. The object is then passed to and owned by the
+// MediaRouterUI. |success_cb| will be invoked when create-session
+// succeeds, or |error_cb| will be invoked when create-session fails or
+// the UI closes.
+class CreatePresentationSessionRequest {
+ public:
+  using PresentationSessionSuccessCallback =
+      base::Callback<void(const content::PresentationSessionInfo&,
+                          const MediaRoute::Id&)>;
+  using PresentationSessionErrorCallback =
+      content::PresentationServiceDelegate::PresentationSessionErrorCallback;
+
+  // |presentation_url|: The presentation URL of the request. Must be a valid
+  //                     URL.
+  // |frame_url|: The URL of the frame that initiated the presentation request.
+  // |success_cb|: Callback to invoke when the request succeeds. Must be valid.
+  // |erorr_cb|: Callback to invoke when the request fails. Must be valid.
+  CreatePresentationSessionRequest(
+      const std::string& presentation_url,
+      const GURL& frame_url,
+      const PresentationSessionSuccessCallback& success_cb,
+      const PresentationSessionErrorCallback& error_cb);
+  ~CreatePresentationSessionRequest();
+
+  const MediaSource& media_source() const { return media_source_; }
+  const GURL& frame_url() const { return frame_url_; }
+
+  // Invokes |success_cb_| or |error_cb_| with the given arguments.
+  // These functions can only be invoked once per instance. It is an error
+  // to invoke these functions more than once.
+  void InvokeSuccessCallback(const std::string& presentation_id,
+                             const MediaRoute::Id& route_id);
+  void InvokeErrorCallback(const content::PresentationError& error);
+
+  // Handle route creation/joining response by invoking the right callback.
+  static void HandleRouteResponse(
+      scoped_ptr<CreatePresentationSessionRequest> presentation_request,
+      const MediaRoute* route,
+      const std::string& presentation_id,
+      const std::string& error);
+
+ private:
+  const MediaSource media_source_;
+  const GURL frame_url_;
+  PresentationSessionSuccessCallback success_cb_;
+  PresentationSessionErrorCallback error_cb_;
+  bool cb_invoked_;
+
+  DISALLOW_COPY_AND_ASSIGN(CreatePresentationSessionRequest);
+};
+
+}  // namespace media_router
+
+#endif  // CHROME_BROWSER_MEDIA_ROUTER_CREATE_PRESENTATION_SESSION_REQUEST_H_