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() {
+  RequestCancellerMap::iterator it;
+  for (it = pending_request_canceller_map_.begin();
+       it != pending_request_canceller_map_.end();
+       ++it) {
+    it->second.Run();
+  }
+}
+
+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_canceller_map_.end() ==
+      pending_request_canceller_map_.find(request_id));
+
+  base::Closure canceller;
+  bool success = dtls_identity_store_->
+      RequestIdentity(

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

style: Seems this wrapping is over-eager. Perhaps a clang-format bug?

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

Done.

+          origin,
+          identity_name,
+          common_name,
+          base::Bind(&DTLSIdentityServiceHost::OnComplete,
+                     base::Unretained(this), request_id),
+          &canceller);
+  if (success)
+    pending_request_canceller_map_[request_id] = canceller;
+  else
+    OnComplete(request_id, net::ERR_UNEXPECTED, std::string(), std::string());
+}
+
+void DTLSIdentityServiceHost::OnCancelRequest(int request_id) {
+  DCHECK(pending_request_canceller_map_.find(request_id) !=
+      pending_request_canceller_map_.end());
+  pending_request_canceller_map_[request_id].Run();
+  pending_request_canceller_map_.erase(request_id);
+}
+
+void DTLSIdentityServiceHost::OnComplete(int request_id,
+                                         int error,
+                                         const std::string& certificate,
+                                         const std::string& private_key) {
+  DCHECK(pending_request_canceller_map_.find(request_id) !=
+      pending_request_canceller_map_.end());
+  pending_request_canceller_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