Use explicit WebString conversions in autofill

components/autofill/content/renderer/password_form_conversion_utils_browsertest.cc

 // Copyright 2013 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 <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ skipping 168 matching lines @@
     LoadWebFormFromHTML(html, &form);
 
     WebVector<WebFormControlElement> control_elements;
     form.getFormControlElements(control_elements);
     FieldValueAndPropertiesMaskMap user_input;
     for (size_t i = 0; i < control_elements.size(); ++i) {
       WebInputElement* input_element = toWebInputElement(&control_elements[i]);
       if (input_element->hasAttribute("set-activated-submit"))
         input_element->setActivatedSubmit(true);
       if (with_user_input) {
-        const base::string16 element_value = input_element->value();
+        const base::string16 element_value = input_element->value().utf16();
         user_input[control_elements[i]] =
             std::make_pair(base::MakeUnique<base::string16>(element_value), 0U);
       }
     }
 
     return CreatePasswordFormFromWebForm(
         form, with_user_input ? &user_input : nullptr, predictions);
   }
 
   // Iterates on the form generated by the |html| and adds the fields and type
@@ skipping 1264 matching lines @@
   builder.AddPasswordField("password", "secret", nullptr);
   std::string html = builder.ProduceHTML();
 
   std::unique_ptr<PasswordForm> password_form =
       LoadHTMLAndConvertForm(html, nullptr, true);
   ASSERT_TRUE(password_form);
   EXPECT_FALSE(password_form->does_look_like_signup_form);
 }
 
 }  // namespace autofill