Bug 1408572 - Remove handleCtrlPageUpDown attribute and associated code;r=dao

MozReview-Commit-ID: KVYtl2UMYVB

--HG--
extra : rebase_source : 7e833b70e837ca0cb56c3fd2213f9a3bd3b33403

browser/base/content/tabbrowser.xml

@@ -18,7 +18,7 @@
 
     <content>
       <xul:tabbox anonid="tabbox" class="tabbrowser-tabbox"
-                  flex="1" eventnode="document" xbl:inherits="handleCtrlPageUpDown,tabcontainer"
+                  flex="1" eventnode="document" xbl:inherits="tabcontainer"
                   onselect="if (event.target.localName == 'tabpanels') this.parentNode.updateCurrentBrowser();">
         <xul:tabpanels flex="1" class="plain" selectedIndex="0" anonid="panelcontainer">
           <xul:notificationbox flex="1" notificationside="top">

toolkit/content/widgets/tabbox.xml

@@ -32,20 +32,6 @@
         </getter>
       </property>
 
-      <property name="handleCtrlPageUpDown">
-        <setter>
-        <![CDATA[
-          this.setAttribute("handleCtrlPageUpDown", val);
-          return val;
-        ]]>
-        </setter>
-        <getter>
-        <![CDATA[
-          return (this.getAttribute("handleCtrlPageUpDown") != "false");
-        ]]>
-        </getter>
-      </property>
-
       <field name="_handleMetaAltArrows" readonly="true">
         /Mac/.test(navigator.platform)
       </field>
@@ -158,18 +144,18 @@
                 }
               break;
             case event.DOM_VK_PAGE_UP:
-              if (event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey)
-                if (this.tabs && this.handleCtrlPageUpDown) {
-                  this.tabs.advanceSelectedTab(-1, true);
-                  event.preventDefault();
-                }
+              if (event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey &&
+                  this.tabs) {
+                this.tabs.advanceSelectedTab(-1, true);
+                event.preventDefault();
+              }
               break;
             case event.DOM_VK_PAGE_DOWN:
-              if (event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey)
-                if (this.tabs && this.handleCtrlPageUpDown) {
-                  this.tabs.advanceSelectedTab(1, true);
-                  event.preventDefault();
-                }
+              if (event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey &&
+                  this.tabs) {
+                this.tabs.advanceSelectedTab(1, true);
+                event.preventDefault();
+              }
               break;
             case event.DOM_VK_LEFT:
               if (event.metaKey && event.altKey && !event.shiftKey && !event.ctrlKey)