Fix build failure of chrome_public_apk on Android GN build

chrome/browser/usb/usb_tab_helper.cc

 // Copyright 2015 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 "chrome/browser/usb/usb_tab_helper.h"
 
 #include <utility>
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/usb/web_usb_permission_bubble.h"
@@ skipping 27 matching lines @@
     RenderFrameHost* render_frame_host,
     mojo::InterfaceRequest<device::usb::DeviceManager> request) {
   DCHECK(WebContents::FromRenderFrameHost(render_frame_host) == web_contents());
   device::usb::PermissionProviderPtr permission_provider;
   GetPermissionProvider(render_frame_host,
                         mojo::GetProxy(&permission_provider));
   device::usb::DeviceManagerImpl::Create(std::move(permission_provider),
                                          std::move(request));
 }
 
+#if !defined(OS_ANDROID)
 void UsbTabHelper::CreatePermissionBubble(
     content::RenderFrameHost* render_frame_host,
     mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
   GetPermissionBubble(render_frame_host, std::move(request));
 }
+#endif  // !defined(OS_ANDROID)
 
 UsbTabHelper::UsbTabHelper(WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {}
 
 void UsbTabHelper::RenderFrameDeleted(RenderFrameHost* render_frame_host) {
   frame_usb_services_.erase(render_frame_host);
 }
 
 FrameUsbServices* UsbTabHelper::GetFrameUsbService(
     content::RenderFrameHost* render_frame_host) {
@@ skipping 12 matching lines @@
     RenderFrameHost* render_frame_host,
     mojo::InterfaceRequest<device::usb::PermissionProvider> request) {
   FrameUsbServices* frame_usb_services = GetFrameUsbService(render_frame_host);
   if (!frame_usb_services->permission_provider) {
     frame_usb_services->permission_provider.reset(
         new WebUSBPermissionProvider(render_frame_host));
   }
   frame_usb_services->permission_provider->Bind(std::move(request));
 }
 
+#if !defined(OS_ANDROID)
 void UsbTabHelper::GetPermissionBubble(
     content::RenderFrameHost* render_frame_host,
     mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
   FrameUsbServices* frame_usb_services = GetFrameUsbService(render_frame_host);
   if (!frame_usb_services->permission_bubble) {
     frame_usb_services->permission_bubble.reset(
         new ChromeWebUsbPermissionBubble(render_frame_host));
   }
   frame_usb_services->permission_bubble->Bind(std::move(request));
 }
+#endif  // !defined(OS_ANDROID)