Enable PlzNavigate

content/public/common/browser_side_navigation_policy.cc

Index: content/public/common/browser_side_navigation_policy.cc
diff --git a/content/public/common/browser_side_navigation_policy.cc b/content/public/common/browser_side_navigation_policy.cc
index 698ce3f3a69450e2d07056ddd4c6f008192b8ebe..9d874e804549819fc3a917f701a60d2abf6f1f87 100644
--- a/content/public/common/browser_side_navigation_policy.cc
+++ b/content/public/common/browser_side_navigation_policy.cc
@@ -11,10 +11,7 @@
 namespace content {
 
 bool IsBrowserSideNavigationEnabled() {
-  return
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableBrowserSideNavigation) ||
-      base::FeatureList::IsEnabled(features::kBrowserSideNavigation);
+  return true;
 }
 
 }  // namespace content