Move device/usb classes from the FILE thread to UI thread.

extensions/test/data/api_test/usb/reset_device/test.js

Index: extensions/test/data/api_test/usb/reset_device/test.js
diff --git a/extensions/test/data/api_test/usb/reset_device/test.js b/extensions/test/data/api_test/usb/reset_device/test.js
index 2a39adad4ca1bb0584142c7333cec4f1be845292..e709fff913485533687bb010aec093762bbe2592 100644
--- a/extensions/test/data/api_test/usb/reset_device/test.js
+++ b/extensions/test/data/api_test/usb/reset_device/test.js
@@ -19,10 +19,10 @@ function resetDevice() {
         usb.resetDevice(devices[0], function(result) {
           chrome.test.assertLastError(
               'Error resetting the device. The device has been closed.');
-          chrome.test.assertEq(result, false);
+          chrome.test.assertEq(false, result);
           usb.interruptTransfer(devices[0], transfer, function(result) {
-            chrome.test.assertEq(result, undefined);
-            chrome.test.assertLastError('No such device.');
+            chrome.test.assertEq(undefined, result);
+            chrome.test.assertLastError('No such connection.');
             chrome.test.succeed();
           });
         });