[MD settings] show icon when content settings are controlled by an extension

chrome/browser/resources/settings/appearance_page/appearance_page.html

Index: chrome/browser/resources/settings/appearance_page/appearance_page.html
diff --git a/chrome/browser/resources/settings/appearance_page/appearance_page.html b/chrome/browser/resources/settings/appearance_page/appearance_page.html
index de371637cdd07c02d35d787acee1262dbc047ee6..ac2a02450404d0b3c51066647569adf92e64cded 100644
--- a/chrome/browser/resources/settings/appearance_page/appearance_page.html
+++ b/chrome/browser/resources/settings/appearance_page/appearance_page.html
@@ -111,11 +111,11 @@
               hidden="[[!pageVisibility.homeButton]]">
             <settings-radio-group pref="{{prefs.homepage_is_newtabpage}}">
               <controlled-radio-button class="list-item" name="true"
-                  pref="[[prefs.homepage_is_newtabpage]]">
+                  pref="[[prefs.homepage_is_newtabpage]]" ignore-extensions>
                 $i18n{homePageNtp}
               </controlled-radio-button>
               <controlled-radio-button class="list-item" name="false"
-                  pref="[[prefs.homepage_is_newtabpage]]">
+                  pref="[[prefs.homepage_is_newtabpage]]" ignore-extensions>

[dschuyler, 2017/02/28 00:15:18]

ignore-extensions on line 114 and 118 may not be strictly necessary right now.
Afaik, we show the extension controlled info for the homepage in the onstartup
section and not in the appearance section. So this is a calculated estimate on
the right thing to do.

[stevenjb, 2017/02/28 02:59:33]

I would rather error on the side of more icons than less, at least for now.

[Dan Beam, 2017/02/28 19:51:36]

that's not your call, unless you changed to our designer ;)

[stevenjb, 2017/02/28 19:56:28]

I was under the assumption that we didn't have design input yet, thus the
original comment :P Obviously if the design doesn't have icons here then we
shouldn't have icons here. If we are unsure, I would prefer to err on the side
of more information instead of less.

                 $i18n{other}
                 <!-- TODO(dbeam): this can show double indicators when both
                      homepage and whether to use the NTP as the homepage are
@@ -123,7 +123,7 @@
                 <settings-input no-label-float pref="{{prefs.homepage}}"
                     label="$i18n{exampleDotCom}"
                     can-tab="[[!prefs.homepage_is_newtabpage.value]]"
-                    stop-keyboard-event-propagation>
+                    stop-keyboard-event-propagation ignore-extensions>
                 </settings-input>
               </controlled-radio-button>
               <template is="dom-if" if="[[prefs.homepage.extensionId]]">