Initial support for microsummaries via a service and integration into the bookmarks UI.

bug=334471
r=brettw
a=ben for the branch

browser/base/content/browser-menubar.inc

@@ -540,6 +540,46 @@
 #endif
       </toolbarbutton>
     </rule>
+    <!-- A rule to match bookmarks with microsummary generated titles.
+       - We have to use the extended template syntax to specify the rule
+       - because the simplified syntax doesn't permit conditions that test
+       - for the mere presence of a property, and microsummarized bookmarks
+       - are identified by the mere presence of the GeneratedTitle property.
+       -->
+    <rule>
+      <conditions>
+        <content uri="?start" tag="hbox"/>
+        <member container="?start" child="?bookmark"/>
+        <triple subject="?bookmark"
+                predicate="http://home.netscape.com/NC-rdf#GeneratedTitle"
+                object="?GeneratedTitle"/>
+      </conditions>
+      <bindings>
+        <binding subject="?bookmark"
+                 predicate="http://home.netscape.com/WEB-rdf#status"
+                 object="?status"/>
+        <binding subject="?bookmark"
+                 predicate="http://home.netscape.com/NC-rdf#Bookmark"
+                 object="?xBookmark"/>
+        <binding subject="?bookmark"
+                 predicate="http://home.netscape.com/NC-rdf#Icon"
+                 object="?Icon"/>
+        <binding subject="?bookmark"
+                 predicate="http://home.netscape.com/NC-rdf#URL"
+                 object="?URL"/>
+      </bindings>
+      <action>
+        <toolbarbutton class="bookmark-item-microsummarized bookmark-item"
+                       uri="?bookmark"
+                       editable="true" 
+                       status="?status"
+                       rdf:type="?xBookmark"
+                       image="?Icon"
+                       statustext="?URL"
+                       tooltip="btTooltip"
+                       label="?GeneratedTitle"/>
+      </action>
+    </rule>
     <rule parent="hbox">
       <toolbarbutton class="bookmark-item" uri="rdf:*" editable="true" 
                      status="rdf:http://home.netscape.com/WEB-rdf#status"
@@ -581,6 +621,42 @@
         </menu>
       </menupopup>
     </rule>
+    <!-- A rule to match bookmarks with microsummary generated titles.
+       - We have to use the extended template syntax to specify the rule
+       - because the simplified syntax doesn't permit conditions that test
+       - for the mere presence of a property, and microsummarized bookmarks
+       - are identified by the mere presence of the GeneratedTitle property.
+       -->
+    <rule>
+      <conditions>
+        <content uri="?start"/>
+        <member container="?start" child="?bookmark"/>
+        <triple subject="?bookmark"
+                predicate="http://home.netscape.com/NC-rdf#GeneratedTitle"
+                object="?GeneratedTitle"/>
+      </conditions>
+      <bindings>
+        <binding subject="?bookmark"
+                predicate="http://home.netscape.com/WEB-rdf#status"
+                object="?status"/>
+        <binding subject="?bookmark"
+                predicate="http://home.netscape.com/NC-rdf#Icon"
+                object="?Icon"/>
+        <binding subject="?bookmark"
+                predicate="http://home.netscape.com/NC-rdf#URL"
+                object="?URL"/>
+      </bindings>
+      <action>
+        <menupopup>
+          <menuitem class="menuitem-iconic bookmark-item"
+                    uri="?bookmark"
+                    label="?GeneratedTitle" 
+                    image="?Icon"
+                    status="?status"
+                    statustext="?URL"/>
+        </menupopup>
+      </action>
+    </rule>
     <rule>
       <menupopup>
         <menuitem class="menuitem-iconic bookmark-item" uri="rdf:*"