[MD Settings] Add ARIA roles to profile image chooser for ChromeVox.

chrome/browser/resources/settings/people_page/change_picture.html

Index: chrome/browser/resources/settings/people_page/change_picture.html
diff --git a/chrome/browser/resources/settings/people_page/change_picture.html b/chrome/browser/resources/settings/people_page/change_picture.html
index 963de294a34680c7d5c7a4f74d6e6c1baf7db5a2..ac971a73a0a210792882cf6a14569d681cb2ccc4 100644
--- a/chrome/browser/resources/settings/people_page/change_picture.html
+++ b/chrome/browser/resources/settings/people_page/change_picture.html
@@ -99,23 +99,23 @@
       </iron-a11y-keys>
       <div id="availableIcons" class="start">
         <iron-selector id="selector" on-iron-activate="onImageActivate_"
-            selected-item="{{selectedItem_}}">
-          <iron-icon id="cameraImage"
+            selected-item="{{selectedItem_}}" role="radiogroup">
+          <iron-icon id="cameraImage" role="radio"
               data-type$="[[selectionTypesEnum_.CAMERA]]"
               icon="settings:camera-alt" title="$i18n{takePhoto}"
               hidden="[[!cameraPresent_]]">
           </iron-icon>
-          <iron-icon data-type$="[[selectionTypesEnum_.FILE]]"
+          <iron-icon data-type$="[[selectionTypesEnum_.FILE]]" role="radio"
               icon="cr:folder" title="$i18n{chooseFile}">
           </iron-icon>
-          <img id="profileImage"
+          <img id="profileImage" role="radio"
               data-type$="[[selectionTypesEnum_.PROFILE]]"
               src="[[profileImageUrl_]]" title="$i18n{profilePhotoLoading}">
-          <img id="oldImage" data-type$="[[selectionTypesEnum_.OLD]]"
-              src="[[oldImageUrl_]]" hidden="[[!oldImageUrl_]]"
+          <img id="oldImage" data-type$="[[selectionTypesEnum_.OLD]]" 

[hcarmona, 2017/06/02 00:50:04]

nit: remove space at end of line

+              role="radio" src="[[oldImageUrl_]]" hidden="[[!oldImageUrl_]]"
               title="$i18n{oldPhoto}">
           <template is="dom-repeat" items="[[defaultImages_]]">
-            <img data-type$="[[selectionTypesEnum_.DEFAULT]]"
+            <img data-type$="[[selectionTypesEnum_.DEFAULT]]" role="radio" 
                 data-default-image-index$="[[index]]" src="[[item.url]]"
                 title="[[item.title]]">
           </template>