[Cleanup] Move all browsertests to use ScopedFeatureList to modify features

content/browser/webrtc/webrtc_video_capture_browsertest.cc

 // Copyright 2017 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 "base/command_line.h"
+#include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "content/browser/webrtc/webrtc_webcam_browsertest.h"
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/common/child_process_host.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/service_manager_connection.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "media/base/media_switches.h"
@@ skipping 25 matching lines @@
     "verifyHasReceivedTrackEndedEvent()";
 
 }  // anonymous namespace
 
 // Integration test that exercises video capture functionality from the
 // JavaScript level.
 class WebRtcVideoCaptureBrowserTest : public ContentBrowserTest {
  protected:
   void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kUseFakeDeviceForMediaStream);
-    command_line->AppendSwitchASCII(switches::kEnableFeatures,
-                                    video_capture::kMojoVideoCapture.name);
     command_line->AppendSwitch(switches::kUseFakeUIForMediaStream);
     base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
         switches::kEnableBlinkFeatures, "GetUserMedia");
   }
 
   void SetUp() override {
     ASSERT_TRUE(embedded_test_server()->InitializeAndListen());
+    scoped_feature_list_.InitAndEnableFeature(video_capture::kMojoVideoCapture);
     EnablePixelOutput();
     ContentBrowserTest::SetUp();
   }
+
+ private:
+  base::test::ScopedFeatureList scoped_feature_list_;
 };
 
 IN_PROC_BROWSER_TEST_F(WebRtcVideoCaptureBrowserTest,
                        MAYBE_RecoverFromCrashInVideoCaptureProcess) {
   embedded_test_server()->StartAcceptingConnections();
   GURL url(embedded_test_server()->GetURL(kVideoCaptureHtmlFile));
   NavigateToURL(shell(), url);
 
   std::string result;
   // Start video capture and wait until it started rendering
@@ skipping 17 matching lines @@
       shell(), kVerifyHasReceivedTrackEndedEvent, &result));
   ASSERT_EQ("OK", result);
 
   // Start capturing again and expect it to work.
   ASSERT_TRUE(ExecuteScriptAndExtractString(
       shell(), kStartVideoCaptureAndVerifySize, &result));
   ASSERT_EQ("OK", result);
 }
 
 }  // namespace content