Add chrome side webusb permission UI code

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 62fa372215ae9470f7480e6e8e28188cdf94091d..572b7db90ada37205f281ca55701e2dead2429e8 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -270,6 +270,10 @@
 #include "chrome/browser/media/router/presentation_service_delegate_impl.h"
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+#include "chrome/browser/usb/web_usb_permission_bubble.h"
+#endif
+
 using base::FileDescriptor;
 using blink::WebWindowFeatures;
 using content::AccessTokenStore;
@@ -640,6 +644,14 @@ void CreateUsbDeviceManager(
 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
 }
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+void CreateWebUsbPermissionBubble(
+    RenderFrameHost* render_frame_host,
+    mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
+  ChromeWebUsbPermissionBubble::Create(render_frame_host, request.Pass());
+}
+#endif
+
 }  // namespace
 
 ChromeContentBrowserClient::ChromeContentBrowserClient()
@@ -2579,6 +2591,10 @@ void ChromeContentBrowserClient::RegisterRenderFrameMojoServices(
     content::ServiceRegistry* registry,
     content::RenderFrameHost* render_frame_host) {
   registry->AddService(base::Bind(&CreateUsbDeviceManager, render_frame_host));
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  registry->AddService(
+      base::Bind(&CreateWebUsbPermissionBubble, render_frame_host));
+#endif
 }
 
 void ChromeContentBrowserClient::OpenURL(