Restrict CM API interface request and message dispatch.

components/password_manager/content/renderer/credential_manager_client.cc

 // Copyright 2014 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.
 
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 248 matching lines @@
       base::Bind(&RespondToRequestCallback,
                  base::Owned(new RequestCallbacksWrapper(callbacks))));
 }
 
 void CredentialManagerClient::ConnectToMojoCMIfNeeded() {
   if (mojo_cm_service_)
     return;
 
   content::RenderFrame* main_frame = render_view()->GetMainRenderFrame();
   main_frame->GetRemoteInterfaces()->GetInterface(&mojo_cm_service_);
+
+  // The remote end of the pipe will be forcibly closed by the browser side
+  // after each main frame navigation. Set up an error handler to reset the
+  // local end so that there will be an attempt at reestablishing the connection
+  // at the next call to the API.
+  mojo_cm_service_.set_connection_error_handler(base::Bind(
+      &CredentialManagerClient::OnMojoConnectionError, base::Unretained(this)));
+}
+
+void CredentialManagerClient::OnMojoConnectionError() {
+  mojo_cm_service_.reset();
 }
 
 void CredentialManagerClient::OnDestruct() {
   delete this;
 }
 
 }  // namespace password_manager