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..e431cb66052da5da6c27a2c196ad53cd11c4dd56 100644
--- a/blimp/client/core/blimp_client_context_impl.cc
+++ b/blimp/client/core/blimp_client_context_impl.cc
@@ -89,7 +89,8 @@ BlimpClientContextImpl::BlimpClientContextImpl(
       weak_factory_(this) {
   net_components_.reset(new ClientNetworkComponents(
       base::MakeUnique<CrossThreadNetworkEventObserver>(
-          weak_factory_.GetWeakPtr(), base::SequencedTaskRunnerHandle::Get())));
+          connection_status_.GetWeakPtr(),
+          base::SequencedTaskRunnerHandle::Get())));
 
   // The |thread_pipe_manager_| must be set up correctly before features are
   // registered.
@@ -143,10 +144,6 @@ void BlimpClientContextImpl::ConnectToAssignmentSource(
                  weak_factory_.GetWeakPtr()));
 }
 
-void BlimpClientContextImpl::OnConnected() {}
-
-void BlimpClientContextImpl::OnDisconnected(int result) {}
-
 GURL BlimpClientContextImpl::GetAssignerURL() {
   return GURL(kDefaultAssignerUrl);
 }
@@ -158,11 +155,19 @@ 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 +177,7 @@ void BlimpClientContextImpl::ConnectWithAssignment(
     return;
   }
 
+  // If we get the assignment, connect to engine.
   io_thread_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&ClientNetworkComponents::ConnectWithAssignment,