Construct USB descriptors over explicit values.

device/usb/usb_configuration_android.cc

Index: device/usb/usb_configuration_android.cc
diff --git a/device/usb/usb_configuration_android.cc b/device/usb/usb_configuration_android.cc
index 4a9c7129d9747014d99d7e705f10806a69346e88..d7c140162b2a1079017d8effcbf1be5092d848f9 100644
--- a/device/usb/usb_configuration_android.cc
+++ b/device/usb/usb_configuration_android.cc
@@ -23,15 +23,11 @@ UsbConfigDescriptor UsbConfigurationAndroid::Convert(
   ScopedJavaLocalRef<jobject> wrapper =
       Java_ChromeUsbConfiguration_create(env, usb_configuration.obj());
 
-  UsbConfigDescriptor config;
-  config.configuration_value =
-      Java_ChromeUsbConfiguration_getConfigurationValue(env, wrapper.obj());
-  config.self_powered =
-      Java_ChromeUsbConfiguration_isSelfPowered(env, wrapper.obj());
-  config.remote_wakeup =
-      Java_ChromeUsbConfiguration_isRemoteWakeup(env, wrapper.obj());
-  config.maximum_power =
-      Java_ChromeUsbConfiguration_getMaxPower(env, wrapper.obj());
+  UsbConfigDescriptor config(
+      Java_ChromeUsbConfiguration_getConfigurationValue(env, wrapper.obj()),
+      Java_ChromeUsbConfiguration_isSelfPowered(env, wrapper.obj()),
+      Java_ChromeUsbConfiguration_isRemoteWakeup(env, wrapper.obj()),
+      Java_ChromeUsbConfiguration_getMaxPower(env, wrapper.obj()));
 
   ScopedJavaLocalRef<jobjectArray> interfaces =
       Java_ChromeUsbConfiguration_getInterfaces(env, wrapper.obj());