Remove dangling ManagePasswordsBubbleModel pointers. Test that different password bubbles don't pin…

chrome/browser/ui/cocoa/passwords/account_chooser_view_controller_unittest.mm

 // Copyright 2015 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.
 
 #import "chrome/browser/ui/cocoa/passwords/account_chooser_view_controller.h"
 
 #include <utility>
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/string16.h"
@@ skipping 194 matching lines @@
 TEST_F(AccountChooserViewControllerTest, ClickTitleLink) {
   PasswordDialogController::FormsVector local_forms;
   local_forms.push_back(Credential("pizza"));
   SetUpAccountChooser(std::move(local_forms),
                       PasswordDialogController::FormsVector());
   EXPECT_CALL(dialog_controller(), OnSmartLockLinkClicked());
   [view_controller().titleView clickedOnLink:@""
                                      atIndex:0];
 }
 
+TEST_F(AccountChooserViewControllerTest, ClosePromptAndHandleClick) {
+  // A user may press mouse down, some navigation closes the dialog, mouse up
+  // still sends the action. The view should not crash.
+  PasswordDialogController::FormsVector local_forms;
+  local_forms.push_back(Credential("pizza"));
+  SetUpAccountChooser(std::move(local_forms),
+                      PasswordDialogController::FormsVector());
+  [view_controller() setBridge:nil];
+  [view_controller().titleView clickedOnLink:@"" atIndex:0];
+  [view_controller().credentialsView
+          selectRowIndexes:[NSIndexSet indexSetWithIndex:0]
+      byExtendingSelection:NO];
+  [view_controller().cancelButton performClick:nil];
+}
+
 }  // namespace