Do not autofill element when there is no autofill suggestion from profile

components/autofill/content/renderer/form_autofill_util.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 "components/autofill/content/renderer/form_autofill_util.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 519 matching lines @@
 
 // Sets the |field|'s value to the value in |data|.
 // Also sets the "autofilled" attribute, causing the background to be yellow.
 void FillFormField(const FormFieldData& data,
                    bool is_initiating_node,
                    blink::WebFormControlElement* field) {
   // Nothing to fill.
   if (data.value.empty())
     return;
 
+  if (!data.is_autofilled)
+    return;
+
   field->setAutofilled(true);
 
   WebInputElement* input_element = toWebInputElement(field);
   if (IsCheckableElement(input_element)) {
     input_element->setChecked(data.is_checked, true);
   } else {
     base::string16 value = data.value;
     if (IsTextInput(input_element) || IsMonthInput(input_element)) {
       // If the maxlength attribute contains a negative value, maxLength()
       // returns the default maxlength value.
@@ skipping 14 matching lines @@
 
 // Sets the |field|'s "suggested" (non JS visible) value to the value in |data|.
 // Also sets the "autofilled" attribute, causing the background to be yellow.
 void PreviewFormField(const FormFieldData& data,
                       bool is_initiating_node,
                       blink::WebFormControlElement* field) {
   // Nothing to preview.
   if (data.value.empty())
     return;
 
+  if (!data.is_autofilled)
+    return;
+
   // Preview input, textarea and select fields. For input fields, excludes
   // checkboxes and radio buttons, as there is no provision for
   // setSuggestedCheckedValue in WebInputElement.
   WebInputElement* input_element = toWebInputElement(field);
   if (IsTextInput(input_element) || IsMonthInput(input_element)) {
     // If the maxlength attribute contains a negative value, maxLength()
     // returns the default maxlength value.
     input_element->setSuggestedValue(
       data.value.substr(0, input_element->maxLength()));
     input_element->setAutofilled(true);
@@ skipping 594 matching lines @@
 
 gfx::RectF GetScaledBoundingBox(float scale, WebFormControlElement* element) {
   gfx::Rect bounding_box(element->boundsInViewportSpace());
   return gfx::RectF(bounding_box.x() * scale,
                     bounding_box.y() * scale,
                     bounding_box.width() * scale,
                     bounding_box.height() * scale);
 }
 
 }  // namespace autofill