Fix cloud policy duplicate registrations issue.

chrome/browser/policy/cloud_policy_client.cc

Index: chrome/browser/policy/cloud_policy_client.cc
diff --git a/chrome/browser/policy/cloud_policy_client.cc b/chrome/browser/policy/cloud_policy_client.cc
index 16a3db635b73d3f7d5429ba5502525b945e0d7c1..32b1885cede3f10764c5c7c6247ec8d6aa57f83d 100644
--- a/chrome/browser/policy/cloud_policy_client.cc
+++ b/chrome/browser/policy/cloud_policy_client.cc
@@ -110,6 +110,9 @@ void CloudPolicyClient::Register(em::DeviceRegisterRequest::Type type,
   if (is_auto_enrollement)
     request->set_auto_enrolled(true);
 
+  request_job_->SetRetryCallback(
+      base::Bind(&CloudPolicyClient::OnRetryRegister, base::Unretained(this)));
+
   request_job_->Start(base::Bind(&CloudPolicyClient::OnRegisterCompleted,
                                  base::Unretained(this)));
 }
@@ -201,6 +204,16 @@ const em::PolicyFetchResponse* CloudPolicyClient::GetPolicyFor(
   return it == responses_.end() ? NULL : it->second;
 }
 
+void CloudPolicyClient::OnRetryRegister(DeviceManagementRequestJob* job) {
+  DCHECK_EQ(request_job_.get(), job);
+  // If the initial request managed to get to the server but the response didn't
+  // arrive to the client then retrying with the same device-id will fail.

[Mattias Nissler (ping if slow), 2013/02/11 11:30:37]

nit: s/to/at/

[Mattias Nissler (ping if slow), 2013/02/11 11:30:37]

nit: s/device-id/client ID/ (for consistency with the file)

[Joao da Silva, 2013/02/11 17:38:19]

Done.

[Joao da Silva, 2013/02/11 17:38:19]

Done.

+  // Set the re-registration flag so that the server accepts it.
+  // If the server hasn't seen the device-id before then it will also accept

[Mattias Nissler (ping if slow), 2013/02/11 11:30:37]

ditto

[Joao da Silva, 2013/02/11 17:38:19]

Done.

+  // the re-registration.
+  job->GetRequest()->mutable_register_request()->set_reregister(true);
+}
+
 void CloudPolicyClient::OnRegisterCompleted(
     DeviceManagementStatus status,
     const em::DeviceManagementResponse& response) {