Restrict CM API interface request and message dispatch.

components/password_manager/content/renderer/credential_manager_client.cc

Index: components/password_manager/content/renderer/credential_manager_client.cc
diff --git a/components/password_manager/content/renderer/credential_manager_client.cc b/components/password_manager/content/renderer/credential_manager_client.cc
index 1111e03a58dca3567e43b7e77d87c41a393d0597..aa3cbaa72ab60a9e0f4e2eff5820baf52797acdc 100644
--- a/components/password_manager/content/renderer/credential_manager_client.cc
+++ b/components/password_manager/content/renderer/credential_manager_client.cc
@@ -266,6 +266,17 @@ void CredentialManagerClient::ConnectToMojoCMIfNeeded() {
 
   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() {