Introducing chrome.usb.getDevices/openDevice API

chrome/browser/usb/usb_device.cc

 // Copyright 2013 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_device.h"
 
 #include <algorithm>
 
 #include "base/stl_util.h"
 #include "chrome/browser/usb/usb_context.h"
 #include "chrome/browser/usb/usb_device_handle.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/libusb/src/libusb/libusb.h"
 
 using content::BrowserThread;
 
 UsbDevice::UsbDevice(
     scoped_refptr<UsbContext> context,
     PlatformUsbDevice platform_device,
     uint16 vendor_id,
-    uint16 product_id)
+    uint16 product_id,
+    uint32 unique_id)
     : platform_device_(platform_device),
       vendor_id_(vendor_id),
       product_id_(product_id),
+      unique_id_(unique_id),
       context_(context) {
   CHECK(platform_device) << "platform_device cannot be NULL";
   libusb_ref_device(platform_device);
 }
 
 UsbDevice::UsbDevice()
     : platform_device_(NULL),
       vendor_id_(0),
       product_id_(0),
+      unique_id_(0),
       context_(NULL) {
 }
 
 UsbDevice::~UsbDevice() {
   DCHECK(thread_checker_.CalledOnValidThread());
   for (HandlesVector::iterator it = handles_.begin();
       it != handles_.end();
       ++it) {
     (*it)->InternalClose();
   }
@@ skipping 48 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   HandlesVector handles;
   swap(handles, handles_);
   for (std::vector<scoped_refptr<UsbDeviceHandle> >::iterator it =
       handles.begin();
       it != handles.end();
       ++it) {
     (*it)->InternalClose();
   }
 }