Enable WebUSB through the Experimental Framework.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index 52fc09caa750a44466a843aebd02df9a417b9c11..bdeb551bd62304887904fe8b87d6f082c9d6ada9 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -1270,12 +1270,7 @@ void ChromeBrowserMainParts::PostBrowserStart() {
 #endif  // defined(ENABLE_WEBRTC)
 
 #if !defined(OS_ANDROID)
-  // WebUSB is an experimental web API. The sites these notifications will link
-  // to will only work if the experiment is enabled and WebUSB feature is
-  // enabled.
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableExperimentalWebPlatformFeatures) &&
-      base::FeatureList::IsEnabled(features::kWebUsb)) {
+  if (base::FeatureList::IsEnabled(features::kWebUsb)) {
     webusb_browser_client_.reset(new ChromeWebUsbBrowserClient());
     webusb_detector_.reset(
         new webusb::WebUsbDetector(webusb_browser_client_.get()));