MD Settings: Implementing modal popup/action menus.

chrome/browser/resources/settings/settings_action_menu.html

Index: chrome/browser/resources/settings/settings_action_menu.html
diff --git a/chrome/browser/resources/settings/settings_action_menu.html b/chrome/browser/resources/settings/settings_action_menu.html
new file mode 100644
index 0000000000000000000000000000000000000000..06a3bdd9177e1b9e691a719a18de0525f32d67ec
--- /dev/null
+++ b/chrome/browser/resources/settings/settings_action_menu.html
@@ -0,0 +1,23 @@
+<link rel="import" href="chrome://resources/html/polymer.html">
+<link rel="import" href="/direction_delegate.html">
+
+<dom-module id="settings-action-menu">
+  <template>
+    <style>
+      :host {
+        background-color: white;
+        border: none;
+        box-shadow: 0 2px 6px var(--paper-grey-500);

[Dan Beam, 2016/10/13 05:03:01]

is it possible to share this somehow with wherever you're copying from?

[dpapad, 2016/10/13 18:18:00]

This is copied from
https://cs.chromium.org/chromium/src/chrome/browser/resources/settings/settin....
When the migration to settings-action-menu is done, there will be no
iron-dropdown in the codebase, and there will be no copying (the CSS rule will
be deleted from settings_shared_css.html). The one here should be the only
occurrence. So I am not inclined to share it with a soon to be gone code.

+        margin: 0;
+        outline: none;
+        padding: 0;
+      }
+
+      :host::backdrop {
+        background-color: transparent;
+      }
+    </style>
+    <content select=".dropdown-item,hr"></content>
+  </template>
+  <script src="settings_action_menu.js"></script>
+</dom-module>