[Password Generation] Sends CSS classes inside autofill proto

chrome/renderer/autofill/form_autofill_browsertest.cc

 // 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.
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/format_macros.h"
 #include "base/macros.h"
@@ skipping 2311 matching lines @@
   EXPECT_TRUE(WebFormElementToFormData(web_form, WebFormControlElement(),
                                        EXTRACT_NONE, &form, nullptr));
 
   ASSERT_EQ(3U, form.fields.size());
 
   EXPECT_FALSE(form.fields[0].should_autocomplete);
   EXPECT_TRUE(form.fields[1].should_autocomplete);
   EXPECT_TRUE(form.fields[2].should_autocomplete);
 }
 
+// Tests CSS classes are set.
+TEST_F(FormAutofillTest, WebFormElementToFormData_CssClasses) {
+  LoadHTML(
+      "<FORM name='TestForm' id='form' action='http://cnn.com' method='post' "
+      "autocomplete='off'>"
+      "    <INPUT type='text' id='firstname' class='firstname_field' />"
+      "    <INPUT type='text' id='lastname' class='lastname_field' />"
+      "    <INPUT type='text' id='addressline1'  />"
+      "</FORM>");
+
+  WebFrame* frame = GetMainFrame();
+  ASSERT_NE(nullptr, frame);
+
+  WebFormElement web_form =
+      frame->document().getElementById("form").to<WebFormElement>();
+  ASSERT_FALSE(web_form.isNull());
+
+  FormData form;
+  EXPECT_TRUE(WebFormElementToFormData(web_form, WebFormControlElement(),
+                                       EXTRACT_NONE, &form, nullptr));
+
+  EXPECT_EQ(3U, form.fields.size());
+  EXPECT_EQ(ASCIIToUTF16("firstname_field"), form.fields[0].css_classes);
+  EXPECT_EQ(ASCIIToUTF16("lastname_field"), form.fields[1].css_classes);
+  EXPECT_EQ(base::string16(), form.fields[2].css_classes);
+}
+
 TEST_F(FormAutofillTest, ExtractForms) {
   ExpectJohnSmithLabels(
       "<FORM name='TestForm' action='http://cnn.com' method='post'>"
       "  First name: <INPUT type='text' id='firstname' value='John'/>"
       "  Last name: <INPUT type='text' id='lastname' value='Smith'/>"
       "  Email: <INPUT type='text' id='email' value='john@example.com'/>"
       "  <INPUT type='submit' name='reply-send' value='Send'/>"
       "</FORM>");
 }
 
@@ skipping 2238 matching lines @@
 
     if (test_case.has_extracted_form) {
       EXPECT_EQ(test_case.is_form_tag, forms[0].is_form_tag);
       EXPECT_EQ(test_case.is_formless_checkout, forms[0].is_formless_checkout);
     }
   }
 }
 
 }  // namespace form_util
 }  // namespace autofill