Add support for distilling arbitrary URLs in DOM Distiller Viewer.

This adds support for requesting to view arbitrary URLs in the DOM
Distiller viewer. Previously, an entry first had to be added to the
list of articles.

Also fixes the CSP for the viewer to be in the correct format.

BUG=319881
[email protected],[email protected]

Review URL: https://codereview.chromium.org/151003006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254458 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/components/dom_distiller_strings.grdp b/components/dom_distiller_strings.grdp
index 611237c..ec722ad 100644
--- a/components/dom_distiller_strings.grdp
+++ b/components/dom_distiller_strings.grdp
@@ -10,12 +10,18 @@
   <message name="IDS_DOM_DISTILLER_WEBUI_ENTRY_URL" desc="The label for the URL of an entry on the DOM Distiller debug page.">
     URL
   </message>
-  <message name="IDS_DOM_DISTILLER_WEBUI_ENTRY_ADD" desc="The label for for the button for adding a new entry on the DOM Distiller debug page.">
+  <message name="IDS_DOM_DISTILLER_WEBUI_ENTRY_ADD" desc="The label for the button for adding a new entry on the DOM Distiller debug page.">
     Add
   </message>
   <message name="IDS_DOM_DISTILLER_WEBUI_ENTRY_ADD_FAILED" desc="The label to show when adding an article failed on the DOM Distiller debug page.">
     Failed to add article.
   </message>
+  <message name="IDS_DOM_DISTILLER_WEBUI_VIEW_URL" desc="The label for the button for viewing a URL on the DOM Distiller debug page.">
+    View
+  </message>
+  <message name="IDS_DOM_DISTILLER_WEBUI_VIEW_URL_FAILED" desc="The label to show when viewing a URL failed on the DOM Distiller debug page.">
+    Failed to view article.
+  </message>
   <message name="IDS_DOM_DISTILLER_WEBUI_REFRESH" desc="The label for the button for refreshing the list of entries on the DOM Distiller debug page.">
     Refresh
   </message>