Reenable WebRtcInternalsMessageHandlerTest.

It was accidentally disabled in
https://codereview.chromium.org/2176753003.

Bug: 783818
Change-Id: I52f53bd0130737486e97989643421f9dc93df749
Reviewed-on: https://chromium-review.googlesource.com/997352Reviewed-by: Patrik Höglund <phoglund@chromium.org>
Commit-Queue: Max Morin <maxmorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548382}

content/browser/webrtc/webrtc_internals_message_handler_unittest.cc

@@ -12,6 +12,7 @@
 #include "content/browser/webrtc/webrtc_internals.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
+#include "content/public/test/navigation_simulator.h"
 #include "content/public/test/test_web_ui.h"
 #include "content/test/test_web_contents.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -77,7 +78,9 @@ TEST_F(WebRtcInternalsMessageHandlerTest, DontRunJSBeforeNavigationCommitted) {
                                        kConstraints);
   base::RunLoop().RunUntilIdle();
 
-  static_cast<TestWebContents*>(web_contents())->StartNavigation(webrtc_url);
+  auto navigation = content::NavigationSimulator::CreateBrowserInitiated(
+      webrtc_url, web_contents());
+  navigation->Start();
   // We still shouldn't run JS, since navigation to webrtc-internals isn't
   // finished.
   webrtc_internals.OnRemovePeerConnection(1, 2);

content/test/BUILD.gn

@@ -1815,6 +1815,7 @@ test("content_unittests") {
       "../browser/renderer_host/p2p/socket_host_test_utils.cc",
       "../browser/renderer_host/p2p/socket_host_test_utils.h",
       "../browser/renderer_host/p2p/socket_host_udp_unittest.cc",
+      "../browser/webrtc/webrtc_internals_message_handler_unittest.cc",
       "../browser/webrtc/webrtc_internals_unittest.cc",
       "../renderer/media/stream/media_stream_audio_processor_unittest.cc",
       "../renderer/media/stream/media_stream_audio_unittest.cc",