Get all the UsbConfigDescriptor for the device configuration

device/usb/usb_device.h

Index: device/usb/usb_device.h
diff --git a/device/usb/usb_device.h b/device/usb/usb_device.h
index 53087c8c79ddc5e7fb16f1cf1362824a1f9b513a..c2cad87db26db8cf8e2c0b61d5ecb54b8656fa6b 100644
--- a/device/usb/usb_device.h
+++ b/device/usb/usb_device.h
@@ -5,6 +5,8 @@
 #ifndef DEVICE_USB_USB_DEVICE_H_
 #define DEVICE_USB_USB_DEVICE_H_
 
+#include <vector>
+
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
@@ -52,7 +54,10 @@ class UsbDevice : public base::RefCountedThreadSafe<UsbDevice> {
 
   // Gets the UsbConfigDescriptor for the active device configuration or nullptr
   // if the device is unconfigured.
-  virtual const UsbConfigDescriptor* GetConfiguration() = 0;
+  virtual const UsbConfigDescriptor* GetCurrentConfiguration() = 0;

[Reilly Grant (use Gerrit), 2015/07/31 23:36:12]

GetCurrentConfiguration -> GetActiveConfiguration

[juncai, 2015/08/03 17:46:01]

Done.

+
+  // Gets all the UsbConfigDescriptor for the device configuration.
+  virtual const std::vector<UsbConfigDescriptor>& configurations() const = 0;

[Reilly Grant (use Gerrit), 2015/07/31 23:36:12]

I'd rather this was not a virtual function. You can declare a protected
set_configurations() method that UsbDeviceImpl uses to set the configurations
after the device has been constructed.

[juncai, 2015/08/03 17:46:01]

Done.

 
  protected:
   UsbDevice(uint16 vendor_id,