Enable user gesture requirement for autoplay experiment.

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 1075 matching lines @@
   settings->setClobberUserAgentInitialScaleQuirk(
       prefs.clobber_user_agent_initial_scale_quirk);
   settings->setIgnoreMainFrameOverflowHiddenQuirk(
       prefs.ignore_main_frame_overflow_hidden_quirk);
   settings->setReportScreenSizeInPhysicalPixelsQuirk(
       prefs.report_screen_size_in_physical_pixels_quirk);
   settings->setShouldReuseGlobalForUnownedMainFrame(
       prefs.resue_global_for_unowned_main_frame);
   settings->setPreferHiddenVolumeControls(true);
   settings->setShrinksViewportContentToFit(true);
+#endif
+
   settings->setAutoplayExperimentMode(
       blink::WebString::fromUTF8(prefs.autoplay_experiment_mode));
-#endif
 
   settings->setViewportEnabled(prefs.viewport_enabled);
   settings->setViewportMetaEnabled(prefs.viewport_meta_enabled);
   settings->setViewportStyle(
       static_cast<blink::WebViewportStyle>(prefs.viewport_style));
 
   settings->setLoadWithOverviewMode(prefs.initialize_at_minimum_page_scale);
   settings->setMainFrameResizesAreOrientationChanges(
       prefs.main_frame_resizes_are_orientation_changes);
 
@@ skipping 2319 matching lines @@
   if (IsUseZoomForDSFEnabled()) {
     webview()->setZoomFactorForDeviceScaleFactor(device_scale_factor_);
   } else {
     webview()->setDeviceScaleFactor(device_scale_factor_);
   }
   webview()->settings()->setPreferCompositingToLCDTextEnabled(
       PreferCompositingToLCDText(compositor_deps_, device_scale_factor_));
 }
 
 }  // namespace content