Add a flag to ignore autocomplete="off" for Autofill.

components/autofill/content/renderer/form_autofill_util.cc

Index: components/autofill/content/renderer/form_autofill_util.cc
diff --git a/components/autofill/content/renderer/form_autofill_util.cc b/components/autofill/content/renderer/form_autofill_util.cc
index c6175c9f22729eb75d442d0be697a370eb8cfbb7..3d012094f99f628e8cc4e16cc99b08ad1282ac03 100644
--- a/components/autofill/content/renderer/form_autofill_util.cc
+++ b/components/autofill/content/renderer/form_autofill_util.cc
@@ -60,11 +60,18 @@ enum FieldFilterMask {
   FILTER_DISABLED_ELEMENTS          = 1 << 0,
   FILTER_READONLY_ELEMENTS          = 1 << 1,
   FILTER_NON_FOCUSABLE_ELEMENTS     = 1 << 2,
-  FILTER_ALL_NON_EDITIABLE_ELEMENTS = FILTER_DISABLED_ELEMENTS |
+  FILTER_ALL_NON_EDITABLE_ELEMENTS = FILTER_DISABLED_ELEMENTS |
                                       FILTER_READONLY_ELEMENTS |
                                       FILTER_NON_FOCUSABLE_ELEMENTS,
 };
 
+RequirementsMask ExtractionRequirements() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+             switches::kIgnoreAutocompleteOffForAutofill)
+             ? REQUIRE_NONE
+             : REQUIRE_AUTOCOMPLETE;
+}
+
 bool IsOptionElement(const WebElement& element) {
   CR_DEFINE_STATIC_LOCAL(WebString, kOption, ("option"));
   return element.hasHTMLTagName(kOption);
@@ -480,8 +487,8 @@ void ForEachMatchingFormField(const WebFormElement& form_element,
                               bool force_override,
                               Callback callback) {
   std::vector<WebFormControlElement> control_elements;
-  ExtractAutofillableElements(form_element, REQUIRE_AUTOCOMPLETE,
-                              &control_elements);
+  ExtractAutofillableElements(
+      form_element, ExtractionRequirements(), &control_elements);
 
   if (control_elements.size() != data.fields.size()) {
     // This case should be reachable only for pathological websites and tests,
@@ -1001,7 +1008,7 @@ void FillForm(const FormData& form, const WebFormControlElement& element) {
   ForEachMatchingFormField(form_element,
                            element,
                            form,
-                           FILTER_ALL_NON_EDITIABLE_ELEMENTS,
+                           FILTER_ALL_NON_EDITABLE_ELEMENTS,
                            false, /* dont force override */
                            &FillFormField);
 }
@@ -1042,7 +1049,7 @@ void PreviewForm(const FormData& form, const WebFormControlElement& element) {
   ForEachMatchingFormField(form_element,
                            element,
                            form,
-                           FILTER_ALL_NON_EDITIABLE_ELEMENTS,
+                           FILTER_ALL_NON_EDITABLE_ELEMENTS,
                            false, /* dont force override */
                            &PreviewFormField);
 }
@@ -1054,8 +1061,8 @@ bool ClearPreviewedFormWithElement(const WebFormControlElement& element,
     return false;
 
   std::vector<WebFormControlElement> control_elements;
-  ExtractAutofillableElements(form_element, REQUIRE_AUTOCOMPLETE,
-                              &control_elements);
+  ExtractAutofillableElements(
+      form_element, ExtractionRequirements(), &control_elements);
   for (size_t i = 0; i < control_elements.size(); ++i) {
     // There might be unrelated elements in this form which have already been
     // auto-filled.  For example, the user might have already filled the address
@@ -1114,8 +1121,8 @@ bool FormWithElementIsAutofilled(const WebInputElement& element) {
     return false;
 
   std::vector<WebFormControlElement> control_elements;
-  ExtractAutofillableElements(form_element, REQUIRE_AUTOCOMPLETE,
-                              &control_elements);
+  ExtractAutofillableElements(
+      form_element, ExtractionRequirements(), &control_elements);
   for (size_t i = 0; i < control_elements.size(); ++i) {
     WebInputElement* input_element = toWebInputElement(&control_elements[i]);
     if (!IsAutofillableInputElement(input_element))