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

content/renderer/presentation/presentation_session_client.cc

Index: content/renderer/presentation/presentation_session_client.cc
diff --git a/content/renderer/presentation/presentation_session_client.cc b/content/renderer/presentation/presentation_session_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c3540d613ae69c9477b05d7cc37b465e123919ff
--- /dev/null
+++ b/content/renderer/presentation/presentation_session_client.cc
@@ -0,0 +1,30 @@
+// 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.
+
+#include "content/renderer/presentation/presentation_session_client.h"
+
+#include "base/logging.h"
+#include "content/renderer/presentation/presentation_session_dispatcher.h"
+#include "third_party/WebKit/public/platform/WebString.h"
+
+namespace content {
+
+PresentationSessionClient::PresentationSessionClient(
+    PresentationSessionDispatcher* dispatcher)
+    : dispatcher_(dispatcher) {
+    DCHECK(dispatcher);
+}
+
+PresentationSessionClient::~PresentationSessionClient() {
+}
+
+blink::WebString PresentationSessionClient::getUrl() {
+  return blink::WebString::fromUTF8(dispatcher_->getUrl());
+}
+
+blink::WebString PresentationSessionClient::getId() {
+  return blink::WebString::fromUTF8(dispatcher_->getId());
+}
+
+}  // namespace content