Migrate more tests to ScopedFeatureList.

media/blink/webmediaplayer_impl_unittest.cc

 // Copyright 2016 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 "media/blink/webmediaplayer_impl.h"
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/test/scoped_feature_list.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "media/base/media_log.h"
 #include "media/base/media_switches.h"
 #include "media/base/test_helpers.h"
 #include "media/blink/webmediaplayer_delegate.h"
 #include "media/blink/webmediaplayer_params.h"
 #include "media/renderers/default_renderer_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 197 matching lines @@
   void AddBufferedRanges() {
     wmpi_->buffered_data_source_host_.AddBufferedByteRange(0, 1);
   }
 
   void SetupForResumingBackgroundVideo() {
 #if !defined(OS_ANDROID)
     // Need to enable media suspend to test resuming background videos.
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableMediaSuspend);
 #endif  // !defined(OS_ANDROID)
-    std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
-    feature_list->InitializeFromCommandLine(kResumeBackgroundVideo.name, "");
-    base::FeatureList::ClearInstanceForTesting();
-    base::FeatureList::SetInstance(std::move(feature_list));
+    scoped_feature_list_.InitAndEnableFeature(kResumeBackgroundVideo);
   }
 
   // "Renderer" thread.
   base::MessageLoop message_loop_;
 
   // "Media" thread. This is necessary because WMPI destruction waits on a
   // WaitableEvent.
   base::Thread media_thread_;
 
   // Blink state.
@@ skipping 10 matching lines @@
   // The client interface used by |wmpi_|. Just a dummy for now, but later we
   // may want a mock or intelligent fake.
   DummyWebMediaPlayerClient client_;
 
   testing::NiceMock<MockWebMediaPlayerDelegate> delegate_;
 
   // The WebMediaPlayerImpl instance under test.
   std::unique_ptr<WebMediaPlayerImpl> wmpi_;
 
  private:
+  base::test::ScopedFeatureList scoped_feature_list_;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImplTest);
 };
 
 TEST_F(WebMediaPlayerImplTest, ConstructAndDestroy) {
   InitializeWebMediaPlayerImpl();
 }
 
 TEST_F(WebMediaPlayerImplTest, IdleSuspendIsEnabledBeforeLoadingBegins) {
   InitializeWebMediaPlayerImpl();
   wmpi_->OnSuspendRequested(false);
@@ skipping 436 matching lines @@
   EXPECT_CALL(delegate_, DidPlay(_, true, false, false, _));
   client_.set_is_autoplaying_muted(true);
   SetDelegateState(WebMediaPlayerImpl::DelegateState::PLAYING);
 
   EXPECT_CALL(delegate_, DidPlay(_, true, true, false, _));
   client_.set_is_autoplaying_muted(false);
   wmpi_->setVolume(1.0);
 }
 
 }  // namespace media