[CrosDisksClient] Determine device type from DeviceMediaType property sent by cros-disks.

chrome/browser/chromeos/imageburner/burn_controller.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/browser/chromeos/imageburner/burn_controller.h"
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/cros/burn_library.h"
@@ skipping 20 matching lines @@
 // Name for hwid in machine statistics.
 const char kHwidStatistic[] = "hardware_class";
 
 const char kImageZipFileName[] = "chromeos_image.bin.zip";
 
 // 3.9GB. It is less than 4GB because true device size ussually varies a little.
 const uint64 kMinDeviceSize = static_cast<uint64>(3.9 * 1000 * 1000 * 1000);
 
 // Returns true when |disk| is a device on which we can burn recovery image.
 bool IsBurnableDevice(const disks::DiskMountManager::Disk& disk) {
-  return disk.is_parent() && !disk.on_boot_device();
+  return disk.is_parent() && !disk.on_boot_device() &&
+         (disk.device_type() == DEVICE_TYPE_USB ||
+          disk.device_type() == DEVICE_TYPE_SD);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // BurnControllerTaskProxy
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 class BurnControllerTaskProxy
     : public base::RefCountedThreadSafe<BurnControllerTaskProxy> {
@@ skipping 474 matching lines @@
 
 // static
 BurnController* BurnController::CreateBurnController(
     content::WebContents* web_contents,
     Delegate* delegate) {
   return new BurnControllerImpl(web_contents, delegate);
 }
 
 }  // namespace imageburner
 }  // namespace chromeos