[PresentationAPI] Implementing start/joinSession from WebPresentationClient to PresentationService.

content/renderer/presentation/presentation_session_client.h

Index: content/renderer/presentation/presentation_session_client.h
diff --git a/content/renderer/presentation/presentation_session_client.h b/content/renderer/presentation/presentation_session_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..b51c41e874e28cd23af782e89c26b31d06dd0f04
--- /dev/null
+++ b/content/renderer/presentation/presentation_session_client.h
@@ -0,0 +1,34 @@
+// 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 CONTENT_RENDERER_PRESENTATION_PRESENTATION_SESSION_CLIENT_H_
+#define CONTENT_RENDERER_PRESENTATION_PRESENTATION_SESSION_CLIENT_H_
+
+#include "base/compiler_specific.h"
+#include "content/common/content_export.h"
+#include "third_party/WebKit/public/platform/modules/presentation/WebPresentationSessionClient.h"
+
+namespace content {
+
+class PresentationSessionDispatcher;
+
+// PresentationSessionClient is passed to the Blink layer if presentation
+// session has been created successfully. Owned by the callback.
+class CONTENT_EXPORT PresentationSessionClient
+    : public NON_EXPORTED_BASE(blink::WebPresentationSessionClient) {
+ public:
+  explicit PresentationSessionClient(PresentationSessionDispatcher* dispatcher);
+  ~PresentationSessionClient() override;
+
+  // WebPresentationSessionClient implementation.
+  virtual blink::WebString getUrl();
+  virtual blink::WebString getId();
+
+ private:
+  PresentationSessionDispatcher* dispatcher_;

[mlamouri (slow - plz ping), 2015/02/26 22:24:26]

That's not right. You do not control the lifetime of that object so the
|dispatcher_| might be pointing to garbage.

[whywhat, 2015/02/27 14:44:45]

Done.

+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_PRESENTATION_PRESENTATION_SESSION_CLIENT_H_