bugzilla 55188, r=hewitt, sr=hangas

themes/classic/global/mac/classicBindings.xml

@@ -147,6 +147,14 @@
     </content>
   </binding>
 
+  <binding id="menubutton-icon-nostretch">
+    <content includes="menupopup">
+      <xul:box class="menubutton-icon-box" autostretch="never">
+        <xul:image inherits="src" class="menubutton-icon-image"/>
+      </xul:box>
+    </content>
+  </binding>
+
   <binding id="tab" extends="chrome://global/content/tabBindings.xml#tab">
     <content>
       <xul:spring class="tab-image-left" inherits="selected"/>

themes/classic/navigator/mac/navigator.css

@@ -182,8 +182,9 @@ window[chromehidden~="extrachrome"] .chromeclass-extrachrome {
 	  list-style-image      : url("chrome://communicator/skin/bookmarks/location-clicked.gif");
   }
 
-#ubhist-keyword-popup 
+#ubhist-keyword-popup, #ubhist-keyword-popup:hover, #ubhist-keyword-popup:hover:active 
   {
+      -moz-binding          : url("chrome://global/skin/classicBindings.xml#menubutton-icon-nostretch") !important;
 	  margin                : 0px 4px 0px 0px;
 	  width                 : 10px; 
 	  list-style-image      : url("chrome://global/skin/dropmarker-down-on.gif");