Generates the DTLS identity in browser process and returns it to render process.

content/renderer/media/webrtc_identity_service.h

+// Copyright (c) 2013 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_MEDIA_WEBRTC_IDENTITY_SERVICE_H_
+#define CONTENT_RENDERER_MEDIA_WEBRTC_IDENTITY_SERVICE_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "content/public/renderer/render_process_observer.h"
+#include "googleurl/src/gurl.h"
+#include "third_party/libjingle/source/talk/app/webrtc/peerconnectioninterface.h"
+
+namespace content {
+
+// This class handles WebRTC DTLS identity requests by sending IPC messages to
+// the browser process.
+class WebRTCIdentityService : public webrtc::DTLSIdentityServiceInterface,
+                              public RenderProcessObserver {
+ public:
+  WebRTCIdentityService(const GURL& origin);

[Ami GONE FROM CHROMIUM, 2013/06/27 20:05:18]

explicit

[jiayl, 2013/06/27 21:08:37]

Done.

+  virtual ~WebRTCIdentityService();
+
+  // WebRTCIdentityServiceInterface implementation.
+  virtual bool RequestIdentity(const std::string& identity_name,
+                               const std::string& common_name,
+                               webrtc::DTLSIdentityRequestObserver* observer)

[Ami GONE FROM CHROMIUM, 2013/06/27 20:05:18]

why does this interface pass a raw pointer to a refcounted object?

[jiayl, 2013/06/27 21:08:37]

This is following the other webrtc interfaces, like
PeerConnectionInterface::GetStats.

+      OVERRIDE;
+
+ private:
+  // RenderProcessObserver implementation.
+  virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  void OnIdentityReady(int request_id,
+                       const std::string& certificate,
+                       const std::string& private_key);
+
+  void OnRequestFailed(int request_id, int error);
+
+  // The origin of the DTLS connection.
+  GURL origin_;
+  talk_base::scoped_refptr<webrtc::DTLSIdentityRequestObserver>
+      pending_observer_;
+  int pending_request_id_;
+  DISALLOW_COPY_AND_ASSIGN(WebRTCIdentityService);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_IDENTITY_SERVICE_H_