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

content/browser/renderer_host/media/dtls_identity_service_host.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_BROWSER_RENDERER_HOST_MEDIA_DTLS_IDENTITY_SERVICE_HOST_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_DTLS_IDENTITY_SERVICE_HOST_H_
+
+#include <map>
+#include <string>
+
+#include "base/basictypes.h"
+#include "content/browser/media/dtls_identity_store.h"
+#include "content/public/browser/browser_message_filter.h"
+
+class GURL;
+
+namespace content {
+
+// This class is the host for DTLSIdentityService in the browser process.
+class DTLSIdentityServiceHost : public BrowserMessageFilter {
+ public:
+  explicit DTLSIdentityServiceHost(DTLSIdentityStore* dtls_identity_store);
+
+ private:
+  virtual ~DTLSIdentityServiceHost();
+  // content::BrowserMessageFilter override.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+
+  // Requests a DTLS identity from the DTLS identity store for the given
+  // |origin| and |identity_name|. If no such identity exists, a new one will be
+  // generated using the given |common_name|.
+  // |request_id| is a unique id chosen by the client and used to cancel a
+  // pending request.
+  void OnRequestIdentity(int request_id,
+                         const GURL& origin,
+                         const std::string& identity_name,
+                         const std::string& common_name);
+  void OnCancelRequest(int request_id);
+
+  virtual void OnComplete(int request_id,

[Ryan Sleevi, 2013/06/17 23:08:34]

DESIGN: Why is this virtual?

[jiayl, 2013/06/18 01:07:55]

Removed.
On 2013/06/17 23:08:34, Ryan Sleevi wrote:

+                          int error,
+                          const std::string& certificate,
+                          const std::string& private_key);
+
+  typedef std::map<int, base::Closure> RequestCancellerMap;
+  RequestCancellerMap pending_request_canceller_map_;
+  DTLSIdentityStore* dtls_identity_store_;
+
+  DISALLOW_COPY_AND_ASSIGN(DTLSIdentityServiceHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DTLS_IDENTITY_SERVICE_HOST_H_