Propagate error messages to UI for blimp.

blimp/client/app/linux/blimp_client_context_delegate_linux.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BLIMP_CLIENT_APP_LINUX_BLIMP_CLIENT_CONTEXT_DELEGATE_LINUX_H_
 #define BLIMP_CLIENT_APP_LINUX_BLIMP_CLIENT_CONTEXT_DELEGATE_LINUX_H_
 
 #include "blimp/client/public/blimp_client_context_delegate.h"
 #include "google_apis/gaia/identity_provider.h"
 
 namespace blimp {
 namespace client {
 
 class BlimpContents;
 
 class BlimpClientContextDelegateLinux : public BlimpClientContextDelegate {
  public:
   BlimpClientContextDelegateLinux();
   ~BlimpClientContextDelegateLinux() override;
 
   // BlimpClientContextDelegate implementation.
   void AttachBlimpContentsHelpers(BlimpContents* blimp_contents) override;
   void OnAssignmentConnectionAttempted(AssignmentRequestResult result,
                                        const Assignment& assignment) override;
   std::unique_ptr<IdentityProvider> CreateIdentityProvider() override;
-  void OnAuthenticationError(
-      BlimpClientContextDelegate::AuthError error) override;
+  void OnAuthenticationError(const GoogleServiceAuthError& error) override;
+  void OnConnected() override;
+  void OnEngineDisconnected(int result) override;
+  void OnNetworkDisconnected(int result) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BlimpClientContextDelegateLinux);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_APP_LINUX_BLIMP_CLIENT_CONTEXT_DELEGATE_LINUX_H_