Add user name in the feedback data.

blimp/client/core/context/blimp_client_context_impl.cc

Index: blimp/client/core/context/blimp_client_context_impl.cc
diff --git a/blimp/client/core/context/blimp_client_context_impl.cc b/blimp/client/core/context/blimp_client_context_impl.cc
index 7277f1ab6521bbcc13cd7e4189d3f7cfadf3c126..534f9515a5fa9f9cb6a68d18e66b521ee568b515 100644
--- a/blimp/client/core/context/blimp_client_context_impl.cc
+++ b/blimp/client/core/context/blimp_client_context_impl.cc
@@ -188,7 +188,10 @@ void BlimpClientContextImpl::ConnectWithAssignment(
 
 std::unordered_map<std::string, std::string>
 BlimpClientContextImpl::CreateFeedbackData() {
-  return CreateBlimpFeedbackData(blimp_contents_manager_.get());
+  IdentitySource* identity_source = GetIdentitySource();
+  DCHECK(identity_source);
+  return CreateBlimpFeedbackData(blimp_contents_manager_.get(),
+                                 identity_source->GetActiveUsername());
 }
 
 IdentitySource* BlimpClientContextImpl::GetIdentitySource() {