Propagate error messages to UI for blimp.

chrome/browser/android/blimp/chrome_blimp_client_context_delegate.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 CHROME_BROWSER_ANDROID_BLIMP_CHROME_BLIMP_CLIENT_CONTEXT_DELEGATE_H_
 #define CHROME_BROWSER_ANDROID_BLIMP_CHROME_BLIMP_CLIENT_CONTEXT_DELEGATE_H_
 
 #include <memory>
 
 #include "base/macros.h"
+#include "base/strings/string16.h"
 #include "blimp/client/public/blimp_client_context_delegate.h"
 
 class IdentityProvider;
 class Profile;
 
 namespace blimp {
 namespace client {
 class BlimpClientContext;
 class BlimpContents;
 }  // namespace client
@@ skipping 10 matching lines @@
   // Unattaches itself from the BlimpClientContext before going away.
   ~ChromeBlimpClientContextDelegate() override;
 
   // BlimpClientContextDelegate implementation.
   void AttachBlimpContentsHelpers(
       blimp::client::BlimpContents* blimp_contents) override;
   void OnAssignmentConnectionAttempted(
       blimp::client::AssignmentRequestResult result,
       const blimp::client::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;
+
+ protected:
+  // Show an alert message in the embedder.
+  virtual void ShowMessage(const base::string16& msg, bool short_message);
 
  private:
+  void OnDisconnected(const base::string16& reason);
+
   // The profile this delegate is used for.
   Profile* profile_;
 
   // The BlimpClientContext this is the delegate for.
   blimp::client::BlimpClientContext* blimp_client_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBlimpClientContextDelegate);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_BLIMP_CHROME_BLIMP_CLIENT_CONTEXT_DELEGATE_H_