When an element has multiple labels for Autofill, separate them with spaces.

chrome/renderer/autofill/form_manager_browsertest.cc

 // Copyright (c) 2011 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 <vector>
 
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/renderer/autofill/form_manager.h"
@@ skipping 3192 matching lines @@
   std::vector<string16> labels, names, values;
 
   labels.push_back(ASCIIToUTF16("First Name:"));
   names.push_back(ASCIIToUTF16("firstname"));
   values.push_back(ASCIIToUTF16("John"));
 
   labels.push_back(ASCIIToUTF16("Last Name:"));
   names.push_back(ASCIIToUTF16("lastname"));
   values.push_back(ASCIIToUTF16("Smith"));
 
-  labels.push_back(ASCIIToUTF16("Email:xxx@yyy.com"));
+  labels.push_back(ASCIIToUTF16("Email: xxx@yyy.com"));
   names.push_back(ASCIIToUTF16("email"));
   values.push_back(ASCIIToUTF16("john@example.com"));
 
   ExpectLabels(
       "<FORM name=\"TestForm\" action=\"http://cnn.com\" method=\"post\">"
       "  <LABEL for=\"firstname\"> First Name: </LABEL>"
       "  <LABEL for=\"firstname\"></LABEL>"
       "    <INPUT type=\"text\" id=\"firstname\" value=\"John\"/>"
       "  <LABEL for=\"lastname\"></LABEL>"
       "  <LABEL for=\"lastname\"> Last Name: </LABEL>"
@@ skipping 92 matching lines @@
                 WebInputElement::defaultMaxLength(),
                 false)));
   EXPECT_TRUE(fields[2].StrictlyEqualsHack(
       FormField(string16(),
                 ASCIIToUTF16("country"),
                 ASCIIToUTF16("AL"),
                 ASCIIToUTF16("select-one"),
                 0,
                 false)));
 }