test_runner: Migrate MockWebRTCPeerConnectionHandler to Chromium C++ style

content/shell/renderer/test_runner/mock_webrtc_data_channel_handler.cc

 // Copyright 2014 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/shell/renderer/test_runner/mock_webrtc_data_channel_handler.h"
 
-#include <assert.h>
-
+#include "base/logging.h"
 #include "content/shell/renderer/test_runner/WebTestDelegate.h"
 #include "third_party/WebKit/public/platform/WebRTCDataChannelHandlerClient.h"
 
 using namespace blink;
 
 namespace content {
 
 class DataChannelReadyStateTask
     : public WebMethodTask<MockWebRTCDataChannelHandler> {
  public:
@@ skipping 62 matching lines @@
 
 unsigned short MockWebRTCDataChannelHandler::id() const {
   return init_.id;
 }
 
 unsigned long MockWebRTCDataChannelHandler::bufferedAmount() {
   return 0;
 }
 
 bool MockWebRTCDataChannelHandler::sendStringData(const WebString& data) {
-  assert(client_);
+  DCHECK(client_);
   client_->didReceiveStringData(data);
   return true;
 }
 
 bool MockWebRTCDataChannelHandler::sendRawData(const char* data, size_t size) {
-  assert(client_);
+  DCHECK(client_);
   client_->didReceiveRawData(data, size);
   return true;
 }
 
 void MockWebRTCDataChannelHandler::close() {
-  assert(client_);
+  DCHECK(client_);
   delegate_->postTask(new DataChannelReadyStateTask(
       this, client_, WebRTCDataChannelHandlerClient::ReadyStateClosed));
 }
 
 }  // namespace content