Move //components/webusb/ to //chrome/browser/

chrome/browser/chrome_browser_main.h

Index: chrome/browser/chrome_browser_main.h
diff --git a/chrome/browser/chrome_browser_main.h b/chrome/browser/chrome_browser_main.h
index 38da475e4c6bb2e464664aa8dca15fb8ea411180..64b2614e41c379d2487af958374af8c86e6563cf 100644
--- a/chrome/browser/chrome_browser_main.h
+++ b/chrome/browser/chrome_browser_main.h
@@ -32,6 +32,7 @@ class StartupBrowserCreator;
 class StartupTimeBomb;
 class ShutdownWatcherHelper;
 class ThreeDAPIObserver;
+class WebUsbDetector;
 
 namespace chrome_browser {
 // For use by ShowMissingLocaleMessageBox.
@@ -48,11 +49,6 @@ namespace metrics {
 class TrackingSynchronizer;
 }
 
-namespace webusb {
-class WebUsbBrowserClient;
-class WebUsbDetector;
-}
-
 class ChromeBrowserMainParts : public content::BrowserMainParts {
  public:
   ~ChromeBrowserMainParts() override;
@@ -151,8 +147,7 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // A monitor for attributing power consumption to origins.
   std::unique_ptr<ProcessPowerCollector> process_power_collector_;
 
-  std::unique_ptr<webusb::WebUsbBrowserClient> webusb_browser_client_;
-  std::unique_ptr<webusb::WebUsbDetector> webusb_detector_;
+  std::unique_ptr<WebUsbDetector> web_usb_detector_;
 #endif
 
   // Vector of additional ChromeBrowserMainExtraParts.