MD Settings: Allow deleting read-only content setting exceptions.

chrome/browser/resources/settings/site_settings/site_list.html

Index: chrome/browser/resources/settings/site_settings/site_list.html
diff --git a/chrome/browser/resources/settings/site_settings/site_list.html b/chrome/browser/resources/settings/site_settings/site_list.html
index ae632ad06a679d82e01a3469d3e796155487f3e4..dce66b8a7d872a164541c606faa00a443be213a8 100644
--- a/chrome/browser/resources/settings/site_settings/site_list.html
+++ b/chrome/browser/resources/settings/site_settings/site_list.html
@@ -81,7 +81,11 @@
               <iron-icon icon="[[computeIconControlledBy_(item)]]"></iron-icon>
             </template>
 
-            <paper-icon-button id="dots" icon="cr:more-vert"
+            <paper-icon-button id="resetSite" icon="cr:delete"
+                hidden="[[!readOnlyList]]" on-tap="onResetButtonTap_"

[dschuyler, 2017/03/22 18:33:08]

What will happen if this is policy enforced?
I looks like we might show the delete icon in that case and it seems like we
should not.

[tommycli, 2017/03/22 21:05:37]

Done.

+                alt="$i18n{siteSettingsActionReset}">
+            </paper-icon-button>
+            <paper-icon-button id="actionMenuButton" icon="cr:more-vert"

[dschuyler, 2017/03/22 18:33:08]

FYI (doesn't necessarily require a change)

I'm not saying that "dots" is a great id name, but let me point out this style
guide entry:
https://google.github.io/styleguide/htmlcssguide.html#ID_and_Class_Name_Style
(I believe the issue here is size, since the label is not compiled away like it
would be in C++ (which calls for more verbose names)).

[tommycli, 2017/03/22 21:05:37]

Acknowledged.

                 hidden="[[isActionMenuHidden_(item.source, readOnlyList)]]"
                 on-tap="onShowActionMenuTap_" title="$i18n{moreActions}">
             </paper-icon-button>