Mac: Fix warnings in nib files

chrome/app/nibs/BookmarkBarFolderWindow.xib

 <?xml version="1.0" encoding="UTF-8"?>
 <archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="7.10">
         <data>
                 <int key="IBDocument.SystemTarget">1050</int>
-                <string key="IBDocument.SystemVersion">10F569</string>
-                <string key="IBDocument.InterfaceBuilderVersion">804</string>
+                <string key="IBDocument.SystemVersion">10F2108</string>
+                <string key="IBDocument.InterfaceBuilderVersion">823</string>
                 <string key="IBDocument.AppKitVersion">1038.29</string>
                 <string key="IBDocument.HIToolboxVersion">461.00</string>
                 <object class="NSMutableDictionary" key="IBDocument.PluginVersions">
                         <string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
-                        <string key="NS.object.0">804</string>
+                        <string key="NS.object.0">823</string>
                 </object>
                 <object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
                         <bool key="EncodedWithXMLCoder">YES</bool>
                         <integer value="100"/>
                 </object>
                 <object class="NSArray" key="IBDocument.PluginDependencies">
                         <bool key="EncodedWithXMLCoder">YES</bool>
                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                 </object>
                 <object class="NSMutableDictionary" key="IBDocument.Metadata">
@@ skipping 1333 matching lines @@
                                         <string>96.WindowOrigin</string>
                                         <string>96.editorWindowContentRectSynchronizationRect</string>
                                         <string>97.IBPluginDependency</string>
                                         <string>98.IBPluginDependency</string>
                                 </object>
                                 <object class="NSMutableArray" key="dict.values">
                                         <bool key="EncodedWithXMLCoder">YES</bool>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-                                        <string>{{42, 734}, {480, 270}}</string>
+                                        <string>{{333, 734}, {480, 270}}</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-                                        <string>{{42, 734}, {480, 270}}</string>
+                                        <string>{{333, 734}, {480, 270}}</string>
                                         <boolean value="NO"/>
                                         <string>{196, 240}</string>
                                         <string>{{357, 418}, {480, 270}}</string>
                                         <string>BookmarkMenu</string>
                                         <string>{{222, 452}, {372, 293}}</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <object class="NSAffineTransform">
                                                 <bytes key="NSTransformStruct">AUMeAABCrgAAA</bytes>
                                         </object>
@@ skipping 464 matching lines @@
                                         <string key="className">NSObject</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier">
                                                 <string key="majorKey">IBProjectSource</string>
                                                 <string key="minorKey">browser/ui/cocoa/status_bubble_mac.h</string>
                                         </object>
                                 </object>
                                 <object class="IBPartialClassDescription">
                                         <string key="className">NSObject</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier">
                                                 <string key="majorKey">IBProjectSource</string>
-                                                <string key="minorKey">browser/ui/cocoa/tab_strip_model_observer_bridge.h</string>
+                                                <string key="minorKey">browser/ui/cocoa/tabs/tab_strip_model_observer_bridge.h</string>
                                         </object>
                                 </object>
                                 <object class="IBPartialClassDescription">
                                         <string key="className">NSView</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier">
                                                 <string key="majorKey">IBProjectSource</string>
                                                 <string key="minorKey">browser/ui/cocoa/view_id_util.h</string>
                                         </object>
                                 </object>
                                 <object class="IBPartialClassDescription">
                                         <string key="className">NSWindow</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier">
                                                 <string key="majorKey">IBProjectSource</string>
                                                 <string key="minorKey">browser/ui/cocoa/framed_browser_window.h</string>
                                         </object>
                                 </object>
                                 <object class="IBPartialClassDescription">
                                         <string key="className">NSWindow</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier">
                                                 <string key="majorKey">IBProjectSource</string>
-                                                <string key="minorKey">browser/ui/cocoa/nswindow_additions.h</string>
-                                        </object>
-                                </object>
-                                <object class="IBPartialClassDescription">
-                                        <string key="className">NSWindow</string>
-                                        <object class="IBClassDescriptionSource" key="sourceIdentifier">
-                                                <string key="majorKey">IBProjectSource</string>
                                                 <string key="minorKey">browser/ui/cocoa/themed_window.h</string>
                                         </object>
                                 </object>
                         </object>
                         <object class="NSMutableArray" key="referencedPartialClassDescriptionsV3.2+">
                                 <bool key="EncodedWithXMLCoder">YES</bool>
                                 <object class="IBPartialClassDescription">
                                         <string key="className">NSApplication</string>
                                         <string key="superclassName">NSResponder</string>
                                         <object class="IBClassDescriptionSource" key="sourceIdentifier" id="890880056">
@@ skipping 701 matching lines @@
                         <object class="NSMutableArray" key="dict.values">
                                 <bool key="EncodedWithXMLCoder">YES</bool>
                                 <string>{9, 8}</string>
                                 <string>{7, 2}</string>
                                 <string>{19, 19}</string>
                                 <string>{19, 19}</string>
                         </object>
                 </object>
         </data>
 </archive>