[MediaRouter] Replace RouteMessage with PresentationConnectionMessage

chrome/browser/media/router/test_helper.cc

 // Copyright 2015 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 "chrome/browser/media/router/test_helper.h"
 
+#include "base/base64.h"
+#include "base/json/string_escape.h"
 #include "chrome/common/media_router/media_source.h"
 
 namespace media_router {
 
+std::string PresentationConnectionMessageToString(
+    const content::PresentationConnectionMessage& message) {
+  if (!message.message && !message.data)
+    return "null";
+  std::string result;
+  if (message.message) {
+    result = "text=";
+    base::EscapeJSONString(*message.message, true, &result);
+  } else {
+    const base::StringPiece src(
+        reinterpret_cast<const char*>(message.data->data()),
+        message.data->size());
+    base::Base64Encode(src, &result);
+    result = "binary=" + result;
+  }
+  return result;
+}
+
 MockIssuesObserver::MockIssuesObserver(MediaRouter* router)
     : IssuesObserver(router) {}
 MockIssuesObserver::~MockIssuesObserver() {}
 
 MockMediaSinksObserver::MockMediaSinksObserver(MediaRouter* router,
                                                const MediaSource& source,
                                                const url::Origin& origin)
     : MediaSinksObserver(router, source, origin) {}
 MockMediaSinksObserver::~MockMediaSinksObserver() {
 }
 
 MockMediaRoutesObserver::MockMediaRoutesObserver(MediaRouter* router,
     const MediaSource::Id source_id)
     : MediaRoutesObserver(router, source_id) {
 }
 MockMediaRoutesObserver::~MockMediaRoutesObserver() {
 }
 
 MockPresentationConnectionProxy::MockPresentationConnectionProxy() {}
 MockPresentationConnectionProxy::~MockPresentationConnectionProxy() {}
 
 }  // namespace media_router