Add multiple selection support to chooser on desktops

chrome/browser/usb/usb_chooser_controller.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_chooser_controller.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 91 matching lines @@
   return WebUSBPermissionProvider::HasDevicePermission(render_frame_host_,
                                                        devices_[index].first);
 }
 
 void UsbChooserController::RefreshOptions() {}
 
 base::string16 UsbChooserController::GetStatus() const {
   return base::string16();
 }
 
-void UsbChooserController::Select(size_t index) {
+void UsbChooserController::Select(const std::vector<size_t>& indices) {
+  DCHECK_EQ(1u, indices.size());
+  size_t index = indices[0];
   DCHECK_LT(index, devices_.size());
   content::WebContents* web_contents =
       content::WebContents::FromRenderFrameHost(render_frame_host_);
   GURL embedding_origin =
       web_contents->GetMainFrame()->GetLastCommittedURL().GetOrigin();
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
   UsbChooserContext* chooser_context =
       UsbChooserContextFactory::GetForProfile(profile);
   chooser_context->GrantDevicePermission(
@@ skipping 70 matching lines @@
 
 bool UsbChooserController::DisplayDevice(
     scoped_refptr<device::UsbDevice> device) const {
   return device::UsbDeviceFilter::MatchesAny(device, filters_) &&
          (base::CommandLine::ForCurrentProcess()->HasSwitch(
               switches::kDisableWebUsbSecurity) ||
           device::FindInWebUsbAllowedOrigins(
               device->webusb_allowed_origins(),
               render_frame_host_->GetLastCommittedURL().GetOrigin()));
 }