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

content/browser/renderer_host/media/dtls_identity_service_host.cc

+// 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.
+
+#include "content/browser/renderer_host/media/dtls_identity_service_host.h"
+
+#include "base/bind.h"
+#include "content/common/media/dtls_identity_messages.h"
+#include "content/public/browser/render_process_host.h"
+#include "net/base/net_errors.h"
+
+namespace content {
+
+DTLSIdentityServiceHost::DTLSIdentityServiceHost(
+    DTLSIdentityStore* dtls_identity_store)
+    : dtls_identity_store_(dtls_identity_store) {
+}
+
+DTLSIdentityServiceHost::~DTLSIdentityServiceHost() {
+  for (RequestMap::iterator it = pending_request_map_.begin();
+       it != pending_request_map_.end();
+       ++it) {
+    it->second.Cancel();
+  }
+}
+
+bool DTLSIdentityServiceHost::OnMessageReceived(const IPC::Message& message,
+                                                bool* message_was_ok) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP_EX(DTLSIdentityServiceHost, message, *message_was_ok)
+    IPC_MESSAGE_HANDLER(DTLSIdentityMsg_RequestIdentity, OnRequestIdentity)
+    IPC_MESSAGE_HANDLER(DTLSIdentityMsg_CancelRequest, OnCancelRequest)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP_EX()
+  return handled;
+}
+
+void DTLSIdentityServiceHost::OnRequestIdentity(
+    int request_id,
+    const GURL& origin,
+    const std::string& identity_name,
+    const std::string& common_name) {
+  DCHECK(pending_request_map_.find(request_id) == pending_request_map_.end());

[Ryan Sleevi, 2013/06/13 22:36:47]

DCHECK_EQ

[jiayl, 2013/06/14 00:37:01]

It cannot compile, seemingly due to the use of template.

+
+  pending_request_map_[request_id] = DTLSIdentityStore::RequestHandle();
+  dtls_identity_store_->RequestIdentity(
+      origin,
+      identity_name,
+      common_name,
+      base::Bind(&DTLSIdentityServiceHost::OnComplete,
+                 base::Unretained(this), request_id),
+      &pending_request_map_[request_id]);
+}
+
+void DTLSIdentityServiceHost::OnCancelRequest(int request_id) {
+  DCHECK(pending_request_map_.find(request_id) != pending_request_map_.end());

[Ryan Sleevi, 2013/06/13 22:36:47]

DCHECK_EQ

[jiayl, 2013/06/14 00:37:01]

cannot compile

+  pending_request_map_[request_id].Cancel();
+}
+
+void DTLSIdentityServiceHost::OnComplete(int request_id,
+                                         int error,
+                                         const std::string& certificate,
+                                         const std::string& private_key) {
+  DCHECK(pending_request_map_.find(request_id) != pending_request_map_.end());

[Ryan Sleevi, 2013/06/13 22:36:47]

DCHECK_EQ

[jiayl, 2013/06/14 00:37:01]

cannot compile

+  pending_request_map_.erase(request_id);
+  if (error == net::OK) {
+    Send(new DTLSIdentityHostMsg_IdentityReady(request_id,
+                                               certificate,
+                                               private_key));
+  } else {
+    Send(new DTLSIdentityHostMsg_RequestFailed(request_id, error));
+  }
+}
+
+}  // namespace content