Move statistics_provider to chromeos/system

chrome/browser/policy/cloud/device_management_service.h

Index: chrome/browser/policy/cloud/device_management_service.h
diff --git a/chrome/browser/policy/cloud/device_management_service.h b/chrome/browser/policy/cloud/device_management_service.h
index da43b12fbc5c7a7c81045763f768152540af1bcf..4afcc0839aefe3a920f231f8c4c8fe0ff700a87c 100644
--- a/chrome/browser/policy/cloud/device_management_service.h
+++ b/chrome/browser/policy/cloud/device_management_service.h
@@ -105,8 +105,7 @@ class DeviceManagementService : public net::URLFetcherDelegate {
       scoped_refptr<net::URLRequestContextGetter> request_context,
       const std::string& server_url,
       const std::string& user_agent,
-      const std::string& agent_parameter,
-      const std::string& platform_parameter);
+      const std::string& agent_parameter);
   virtual ~DeviceManagementService();
 
   // The ID of URLFetchers created by the DeviceManagementService. This can be
@@ -163,8 +162,8 @@ class DeviceManagementService : public net::URLFetcherDelegate {
   // Agent reported in the "agent" query parameter.
   const std::string agent_parameter_;
 
-  // The platform reported in the "platform" query parameter.
-  const std::string platform_parameter_;
+  // The cached platform reported in the "platform" query parameter.
+  std::string platform_parameter_;
 
   // The request context we use. This is a wrapper of |request_context_|.
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;