Remove unused headers and using declarations from form_field

webkit/forms/form_field.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 WEBKIT_FORMS_FORM_FIELD_H_
 #define WEBKIT_FORMS_FORM_FIELD_H_
 
 #include <vector>
 
 #include "base/string16.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebFormControlElement.h"
 #include "webkit/forms/webkit_forms_export.h"
 
 namespace webkit {
 namespace forms {
 
 // Stores information about a field in a form.
 struct WEBKIT_FORMS_EXPORT FormField {
   FormField();
   virtual ~FormField();
 
@@ skipping 36 matching lines @@
     EXPECT_EQ(expected.label, actual.label); \
     EXPECT_EQ(expected.name, actual.name); \
     EXPECT_EQ(expected.value, actual.value); \
     EXPECT_EQ(expected.form_control_type, actual.form_control_type); \
     EXPECT_EQ(expected.autocomplete_type, actual.autocomplete_type); \
     EXPECT_EQ(expected.max_length, actual.max_length); \
     EXPECT_EQ(expected.is_autofilled, actual.is_autofilled); \
   } while (0)
 
 #endif  // WEBKIT_FORMS_FORM_FIELD_H_