Add delay to didAssociateFormControlsTimer so it doesn't fire too frequently

chrome/test/base/chrome_render_view_test.h

 // Copyright (c) 2012 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_TEST_BASE_CHROME_RENDER_VIEW_TEST_H_
 #define CHROME_TEST_BASE_CHROME_RENDER_VIEW_TEST_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 18 matching lines @@
  protected:
   // testing::Test
   void SetUp() override;
   void TearDown() override;
   content::ContentClient* CreateContentClient() override;
   content::ContentBrowserClient* CreateContentBrowserClient() override;
   content::ContentRendererClient* CreateContentRendererClient() override;
 
   void EnableUserGestureSimulationForAutofill();
   void DisableUserGestureSimulationForAutofill();
+  void WaitForAutofillDidAssociateFormControl();
 
 #if defined(ENABLE_EXTENSIONS)
   std::unique_ptr<extensions::DispatcherDelegate>
       extension_dispatcher_delegate_;
 #endif
 
   autofill::TestPasswordAutofillAgent* password_autofill_agent_;
   autofill::TestPasswordGenerationAgent* password_generation_;
   autofill::AutofillAgent* autofill_agent_;
 
   // Naked pointer as ownership is with content::RenderViewTest::render_thread_.
   ChromeMockRenderThread* chrome_render_thread_;
 };
 
 #endif  // CHROME_TEST_BASE_CHROME_RENDER_VIEW_TEST_H_