[Presentation API] Remove references to presentation sessions.

third_party/WebKit/public/platform/modules/presentation/WebPresentationSessionInfo.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 WebPresentationSessionInfo_h
-#define WebPresentationSessionInfo_h
-
-#include "public/platform/WebString.h"
-#include "public/platform/WebURL.h"
-
-namespace blink {
-
-// A simple wrapper around blink::mojom::PresentationSessionInfo. Since the
-// presentation API has not been Onion Soup-ed, there are portions implemented
-// in Blink and the embedder. Because it is not possible to use the STL and WTF
-// mojo bindings alongside each other, going between Blink and the embedder
-// requires this indirection.
-struct WebPresentationSessionInfo {
-  WebPresentationSessionInfo(const WebURL& url, const WebString& id)
-      : url(url), id(id) {}
-  WebURL url;
-  WebString id;
-};
-
-}  // namespace blink
-
-#endif  // WebPresentationSessionInfo_h