[Mojo Video Capture] Fix VideoCaptureManager exposing implementation details to clients

content/browser/renderer_host/media/media_stream_manager_unittest.cc

 // Copyright (c) 2012 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 <stddef.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 151 matching lines @@
 
 }  // namespace
 
 class MediaStreamManagerTest : public ::testing::Test {
  public:
   MediaStreamManagerTest()
       : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
     audio_manager_.reset(new MockAudioManager());
     audio_system_ = media::AudioSystemImpl::Create(audio_manager_.get());
     media_stream_manager_ =
-        base::MakeUnique<MediaStreamManager>(audio_system_.get());
+        MediaStreamManager::CreateWithDefaults(audio_system_.get());
     base::RunLoop().RunUntilIdle();
   }
 
   ~MediaStreamManagerTest() override {}
 
   MOCK_METHOD1(Response, void(int index));
   void ResponseCallback(int index,
                         const MediaStreamDevices& devices,
                         std::unique_ptr<MediaStreamUIProxy> ui_proxy) {
     Response(index);
@@ skipping 107 matching lines @@
                                                   unique_other_id);
   EXPECT_TRUE(MediaStreamManager::DoesMediaDeviceIDMatchHMAC(
       kMockSalt, security_origin, hashed_other_id, unique_other_id));
   EXPECT_NE(unique_other_id, hashed_other_id);
   EXPECT_EQ(hashed_other_id.size(), 64U);
   for (const char& c : hashed_other_id)
     EXPECT_TRUE(base::IsAsciiDigit(c) || (c >= 'a' && c <= 'f'));
 }
 
 }  // namespace content