Set drive as the default download folder

chrome/browser/download/download_dir_policy_handler.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DIR_POLICY_HANDLER_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DIR_POLICY_HANDLER_H_
 
 #include "components/policy/core/browser/configuration_policy_handler.h"
 
 class PrefValueMap;
 
 namespace policy {
 class PolicyMap;
 }  // namespace policy
 
 // ConfigurationPolicyHandler for the DownloadDirectory policy.
 class DownloadDirPolicyHandler : public policy::TypeCheckingPolicyHandler {
  public:
   DownloadDirPolicyHandler();
   virtual ~DownloadDirPolicyHandler();
 
   // ConfigurationPolicyHandler methods:

[bartfab (slow), 2014/03/13 13:20:00]

Nit: Override and implement the methods in the same order as they are declared
in ConfigurationPolicyHandler.

+  virtual void ApplyPolicySettingsWithPars(
+      const policy::PolicyMap& policies,
+      const policy::PolicyHandlerParameters& pars,
+      PrefValueMap* prefs) OVERRIDE;

[bartfab (slow), 2014/03/13 13:20:00]

Nit: #include "base/compiler_specific.h"

+
   virtual void ApplyPolicySettings(const policy::PolicyMap& policies,
                                    PrefValueMap* prefs) OVERRIDE;
 
+  virtual bool CheckPolicySettings(const policy::PolicyMap& policies,
+                                   policy::PolicyErrorMap* errors) OVERRIDE;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadDirPolicyHandler);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DIR_POLICY_HANDLER_H_