Propagate connection info to Blimp android UI.

blimp/client/core/blimp_client_context_impl.cc

Index: blimp/client/core/blimp_client_context_impl.cc
diff --git a/blimp/client/core/blimp_client_context_impl.cc b/blimp/client/core/blimp_client_context_impl.cc
index 03e447668e88505c94d75d2cb33e080dafa1f93f..13168bc87c83241d23a1dc0dfd21df26441a9bc9 100644
--- a/blimp/client/core/blimp_client_context_impl.cc
+++ b/blimp/client/core/blimp_client_context_impl.cc
@@ -143,9 +143,13 @@ void BlimpClientContextImpl::ConnectToAssignmentSource(
                  weak_factory_.GetWeakPtr()));
 }
 
-void BlimpClientContextImpl::OnConnected() {}
+void BlimpClientContextImpl::OnConnected() {

[David Trainor- moved to gerrit, 2016/09/09 19:33:47]

Get rid of these and make ConnectionStatus the NetworkObserver?

[xingliu, 2016/09/10 22:45:46]

Make sense. Done.

+  connection_status_.OnConnected();
+}
 
-void BlimpClientContextImpl::OnDisconnected(int result) {}
+void BlimpClientContextImpl::OnDisconnected(int result) {
+  connection_status_.OnDisconnected(result);
+}
 
 GURL BlimpClientContextImpl::GetAssignerURL() {
   return GURL(kDefaultAssignerUrl);
@@ -158,11 +162,19 @@ IdentitySource* BlimpClientContextImpl::GetIdentitySource() {
   return identity_source_.get();
 }
 
+ConnectionStatus* BlimpClientContextImpl::GetConnectionStatus() {
+  return &connection_status_;
+}
+
 void BlimpClientContextImpl::ConnectWithAssignment(
     AssignmentRequestResult result,
     const Assignment& assignment) {
   VLOG(1) << "Assignment result: " << result;
 
+  // Cache engine info.
+  connection_status_.onAssignmentResult(result, assignment);
+
+  // Inform the embedder of the assignment result.
   if (delegate_) {
     delegate_->OnAssignmentConnectionAttempted(result, assignment);
   }
@@ -172,6 +184,7 @@ void BlimpClientContextImpl::ConnectWithAssignment(
     return;
   }
 
+  // If we get the assignment, connect to engine.
   io_thread_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&ClientNetworkComponents::ConnectWithAssignment,