device: Restructure the layout of gyp files.

chrome/common/extensions/permissions/usb_device_permission.cc

 // Copyright (c) 2012 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/common/extensions/permissions/usb_device_permission.h"
 
 #include <set>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 16 matching lines @@
 }
 
 UsbDevicePermission::~UsbDevicePermission() {
 }
 
 PermissionMessages UsbDevicePermission::GetMessages() const {
   DCHECK(HasMessages());
   PermissionMessages result;
 
 #if defined(ENABLE_EXTENSIONS)
-  // device.gyp:device_usb is not available when extensions are disabled.
+  // //device/usb/usb.gyp:device_usb is not available when extensions are
+  // disabled.
   for (std::set<UsbDevicePermissionData>::const_iterator i =
       data_set_.begin(); i != data_set_.end(); ++i) {
     const char* vendor = device::UsbIds::GetVendorName(i->vendor_id());
 
     if (vendor) {
       const char* product =
           device::UsbIds::GetProductName(i->vendor_id(), i->product_id());
       if (product) {
         result.push_back(PermissionMessage(
             PermissionMessage::kUsbDevice,
@@ skipping 16 matching lines @@
     }
   }
 #else
   NOTREACHED();
 #endif  // defined(ENABLE_EXTENSIONS)
 
   return result;
 }
 
 }  // namespace extensions