Construct USB descriptors over explicit values.

device/usb/usb_descriptors.h

Index: device/usb/usb_descriptors.h
diff --git a/device/usb/usb_descriptors.h b/device/usb/usb_descriptors.h
index cd8490aafeeb80ee451c4a7272c22f07ee921562..c99a6def7bf9e3e37c1849517e572bc692a895fe 100644
--- a/device/usb/usb_descriptors.h
+++ b/device/usb/usb_descriptors.h
@@ -49,7 +49,14 @@ enum UsbUsageType {
 };
 
 struct UsbEndpointDescriptor {
-  UsbEndpointDescriptor();
+  UsbEndpointDescriptor(uint8_t address,
+                        UsbEndpointDirection direction,
+                        uint16_t maximum_packet_size,
+                        UsbSynchronizationType synchronization_type,
+                        UsbTransferType transfer_type,
+                        UsbUsageType usage_type,
+                        uint16_t polling_interval);
+  UsbEndpointDescriptor() = delete;
   ~UsbEndpointDescriptor();
 
   uint8_t address;
@@ -63,7 +70,12 @@ struct UsbEndpointDescriptor {
 };
 
 struct UsbInterfaceDescriptor {
-  UsbInterfaceDescriptor();
+  UsbInterfaceDescriptor(uint8_t interface_number,
+                         uint8_t alternate_setting,
+                         uint8_t interface_class,
+                         uint8_t interface_subclass,
+                         uint8_t interface_protocol);
+  UsbInterfaceDescriptor() = delete;
   ~UsbInterfaceDescriptor();
 
   uint8_t interface_number;
@@ -76,7 +88,11 @@ struct UsbInterfaceDescriptor {
 };
 
 struct UsbConfigDescriptor {
-  UsbConfigDescriptor();
+  UsbConfigDescriptor(uint8_t configuration_value,
+                      bool self_powered,
+                      bool remote_wakeup,
+                      uint16_t maximum_power);
+  UsbConfigDescriptor() = delete;
   ~UsbConfigDescriptor();
 
   uint8_t configuration_value;