[MD settings] content settings add site button; layout fixes

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 1770 matching lines @@
   <message name="IDS_SETTINGS_SITE_SETTINGS_BLOCK" desc="Label for add block sites in site settings.">
     Block
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SESSION_ONLY" desc="Label for sites in site settings allowing cookies for the current session only.">
     Clear on exit
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_EXCEPTIONS" desc="Label for exception sites in site settings.">
     Exceptions
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ADD_SITE" desc="Label for add site button in site settings.">
-    Add Site
+    Add

[dpapad, 2016/10/19 19:40:13]

I don't think this is needed anymore.  You can use the generic IDS_ADD, see
https://cs.chromium.org/chromium/src/chrome/browser/ui/webui/settings/md_sett...

[dschuyler, 2016/10/20 00:06:09]

Nice, thanks.

Done.

   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SITE_URL" desc="Label for site URL text entry in site settings.">
     Site URL
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ALLOW_MENU" desc="Label for the menu item to allow permission for a particular site.">
     Allow
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_BLOCK_MENU" desc="Label for the menu item to block permission for a particular site.">
     Block
   </message>
@@ skipping 684 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>