Uses child views in Autofill Popup so we can trigger

chrome/browser/ui/autofill/autofill_popup_layout_model_unittest.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/ui/autofill/autofill_popup_layout_model.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 41 matching lines @@
     suggestions.push_back(Suggestion("", "x", "", 0));
     suggestions.push_back(Suggestion("", "", "americanExpressCC", 0));
     suggestions.push_back(Suggestion("", "x", "genericCC", 0));
     // Http warning message.
     suggestions.push_back(
         Suggestion("x", "x", "httpWarning",
                    POPUP_ITEM_ID_HTTP_NOT_SECURE_WARNING_MESSAGE));
     return suggestions;
   }
 #if !defined(OS_ANDROID)
-  int GetElidedValueWidthForRow(size_t row) override { return 0; }
-  int GetElidedLabelWidthForRow(size_t row) override { return 0; }
+  int GetElidedValueWidthForRow(int row) override { return 0; }
+  int GetElidedLabelWidthForRow(int row) override { return 0; }
 #endif
 
  private:
   gfx::RectF element_bounds_;
   gfx::NativeView container_view_;
 };
 
 class AutofillPopupLayoutModelTest : public ChromeRenderViewHostTestHarness {
  public:
   void SetUp() override {
@@ skipping 36 matching lines @@
                     .Width(),
             layout_model()->RowWidthWithoutText(3, /* with_label= */ true));
   EXPECT_EQ(base_size + AutofillPopupLayoutModel::kHttpWarningNamePadding +
                 AutofillPopupLayoutModel::kHttpWarningIconPadding +
                 layout_model()->GetIconImage(4).width(),
             layout_model()->RowWidthWithoutText(4, /* with_label= */ true));
 }
 #endif
 
 }  // namespace autofill