Add autoComplete IDL attribute to textArea and select element.

This patch just adding autoComplete attribute to idl files.
This will just make sure, setter/getter of that attribute to work fine.

Spec:
https://html.spec.whatwg.org/multipage/form-elements.html#the-select-element
https://html.spec.whatwg.org/multipage/form-elements.html#the-textarea-element

Intent to implement and ship:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/2tutRHmhwTE

Bug: 758078
Change-Id: Ibb72aa7a616893c05e0fb224c95a54a6bd457e5a
Reviewed-on: https://chromium-review.googlesource.com/677144
Commit-Queue: Shanmuga Pandi <shanmuga.m@samsung.com>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531502}

third_party/WebKit/LayoutTests/external/wpt/html/dom/reflection-forms-expected.txt

 This is a testharness.js-based test.
-Found 6725 tests; 6675 PASS, 50 FAIL, 0 TIMEOUT, 0 NOTRUN.
+Found 6725 tests; 6709 PASS, 16 FAIL, 0 TIMEOUT, 0 NOTRUN.
 PASS form.title: 32 tests
 PASS form.lang: 32 tests
 PASS form.dir: 62 tests
@@ -105,23 +105,7 @@ PASS select.className (<select class>): 32 tests
 PASS select.hidden: 33 tests
 PASS select.accessKey: 32 tests
 PASS select.tabIndex: 24 tests
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
+PASS select.autocomplete: 17 tests
 PASS select.autofocus: 33 tests
 PASS select.disabled: 33 tests
 PASS select.multiple: 33 tests
@@ -162,23 +146,7 @@ PASS textarea.className (<textarea class>): 32 tests
 PASS textarea.hidden: 33 tests
 PASS textarea.accessKey: 32 tests
 PASS textarea.tabIndex: 24 tests
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
-NOTRUN test
+PASS textarea.autocomplete: 17 tests
 PASS textarea.autofocus: 33 tests
 PASS textarea.cols: 59 tests
 PASS textarea.dirName: 32 tests

third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt

@@ -835,6 +835,7 @@ html element script
 html element section
 html element select
     property add
+    property autocomplete
     property autofocus
     property checkValidity
     property disabled
@@ -932,6 +933,7 @@ html element td
 html element template
     property content
 html element textarea
+    property autocomplete
     property autofocus
     property checkValidity
     property cols

third_party/WebKit/LayoutTests/virtual/stable/webexposed/global-interface-listing-expected.txt

@@ -2724,6 +2724,7 @@ interface HTMLScriptElement : HTMLElement
     setter type
 interface HTMLSelectElement : HTMLElement
     attribute @@toStringTag
+    getter autocomplete
     getter autofocus
     getter disabled
     getter form
@@ -2750,6 +2751,7 @@ interface HTMLSelectElement : HTMLElement
     method remove
     method reportValidity
     method setCustomValidity
+    setter autocomplete
     setter autofocus
     setter disabled
     setter length
@@ -2924,6 +2926,7 @@ interface HTMLTemplateElement : HTMLElement
     method constructor
 interface HTMLTextAreaElement : HTMLElement
     attribute @@toStringTag
+    getter autocomplete
     getter autofocus
     getter cols
     getter defaultValue
@@ -2955,6 +2958,7 @@ interface HTMLTextAreaElement : HTMLElement
     method setCustomValidity
     method setRangeText
     method setSelectionRange
+    setter autocomplete
     setter autofocus
     setter cols
     setter defaultValue

third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt

@@ -854,6 +854,7 @@ html element script
 html element section
 html element select
     property add
+    property autocomplete
     property autofocus
     property checkValidity
     property disabled
@@ -951,6 +952,7 @@ html element td
 html element template
     property content
 html element textarea
+    property autocomplete
     property autofocus
     property checkValidity
     property cols

third_party/WebKit/LayoutTests/webexposed/global-interface-listing-expected.txt

@@ -3336,6 +3336,7 @@ interface HTMLScriptElement : HTMLElement
     setter type
 interface HTMLSelectElement : HTMLElement
     attribute @@toStringTag
+    getter autocomplete
     getter autofocus
     getter disabled
     getter form
@@ -3362,6 +3363,7 @@ interface HTMLSelectElement : HTMLElement
     method remove
     method reportValidity
     method setCustomValidity
+    setter autocomplete
     setter autofocus
     setter disabled
     setter length
@@ -3536,6 +3538,7 @@ interface HTMLTemplateElement : HTMLElement
     method constructor
 interface HTMLTextAreaElement : HTMLElement
     attribute @@toStringTag
+    getter autocomplete
     getter autofocus
     getter cols
     getter defaultValue
@@ -3567,6 +3570,7 @@ interface HTMLTextAreaElement : HTMLElement
     method setCustomValidity
     method setRangeText
     method setSelectionRange
+    setter autocomplete
     setter autofocus
     setter cols
     setter defaultValue

third_party/WebKit/Source/core/html/forms/HTMLSelectElement.idl

@@ -22,7 +22,7 @@
 // https://html.spec.whatwg.org/#the-select-element
 
 interface HTMLSelectElement : HTMLElement {
-    // TODO(foolip): attribute DOMString autocomplete;
+    [CEReactions, Reflect] attribute DOMString autocomplete;
     [CEReactions, Reflect] attribute boolean autofocus;
     [CEReactions, Reflect] attribute boolean disabled;
     [ImplementedAs=formOwner] readonly attribute HTMLFormElement? form;

third_party/WebKit/Source/core/html/forms/HTMLTextAreaElement.idl

@@ -22,7 +22,7 @@
 // https://html.spec.whatwg.org/#the-textarea-element
 
 interface HTMLTextAreaElement : HTMLElement {
-    // attribute DOMString autocomplete;
+    [CEReactions, Reflect] attribute DOMString autocomplete;
     [CEReactions, Reflect] attribute boolean autofocus;
     [CEReactions] attribute unsigned long cols;
     [CEReactions, Reflect] attribute DOMString dirName;