Clear Browsing Data should not have a default button

chrome/app/nibs/ClearBrowsingData.xib

 <?xml version="1.0" encoding="UTF-8"?>
 <archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="7.03">
         <data>
                 <int key="IBDocument.SystemTarget">1050</int>
                 <string key="IBDocument.SystemVersion">9L30</string>
                 <string key="IBDocument.InterfaceBuilderVersion">677</string>
                 <string key="IBDocument.AppKitVersion">949.54</string>
                 <string key="IBDocument.HIToolboxVersion">353.00</string>
                 <object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
                         <bool key="EncodedWithXMLCoder">YES</bool>
@@ skipping 359 matching lines @@
                                                                         <bool key="NSEnabled">YES</bool>
                                                                         <object class="NSButtonCell" key="NSCell" id="158868682">
                                                                                 <int key="NSCellFlags">67239424</int>
                                                                                 <int key="NSCellFlags2">134217728</int>
                                                                                 <string key="NSContents">^IDS_APP_CANCEL</string>
                                                                                 <reference key="NSSupport" ref="561508160"/>
                                                                                 <reference key="NSControlView" ref="110601986"/>
                                                                                 <int key="NSButtonFlags">-2038284033</int>
                                                                                 <int key="NSButtonFlags2">129</int>
                                                                                 <string key="NSAlternateContents"/>
-                                                                                <string key="NSKeyEquivalent"/>
+                                                                                <string type="base64-UTF8" key="NSKeyEquivalent">Gw</string>
                                                                                 <int key="NSPeriodicDelay">200</int>
                                                                                 <int key="NSPeriodicInterval">25</int>
                                                                         </object>
                                                                 </object>
                                                                 <object class="NSButton" id="340114853">
                                                                         <reference key="NSNextResponder" ref="1053951760"/>
                                                                         <int key="NSvFlags">289</int>
                                                                         <string key="NSFrame">{{110, 12}, {166, 32}}</string>
                                                                         <reference key="NSSuperview" ref="1053951760"/>
                                                                         <bool key="NSEnabled">YES</bool>
                                                                         <object class="NSButtonCell" key="NSCell" id="817836045">
                                                                                 <int key="NSCellFlags">67239424</int>
                                                                                 <int key="NSCellFlags2">134217728</int>
                                                                                 <string key="NSContents">^IDS_CLEAR_BROWSING_DATA_COMMIT</string>
                                                                                 <reference key="NSSupport" ref="561508160"/>
                                                                                 <reference key="NSControlView" ref="340114853"/>
                                                                                 <int key="NSButtonFlags">-2038284033</int>
                                                                                 <int key="NSButtonFlags2">129</int>
                                                                                 <string key="NSAlternateContents"/>
-                                                                                <string type="base64-UTF8" key="NSKeyEquivalent">DQ</string>
+                                                                                <string key="NSKeyEquivalent"/>
                                                                                 <int key="NSPeriodicDelay">200</int>
                                                                                 <int key="NSPeriodicInterval">25</int>
                                                                         </object>
                                                                 </object>
                                                         </object>
                                                         <string key="NSFrame">{{41, 0}, {290, 47}}</string>
                                                         <reference key="NSSuperview" ref="1006"/>
                                                         <string key="NSClassName">GTMWidthBasedTweaker</string>
                                                 </object>
                                         </object>
@@ skipping 952 matching lines @@
                                                 <string key="minorKey">browser/cocoa/tab_strip_model_observer_bridge.h</string>
                                         </object>
                                 </object>
                         </object>
                 </object>
                 <int key="IBDocument.localizationMode">0</int>
                 <string key="IBDocument.LastKnownRelativeProjectPath">../../chrome.xcodeproj</string>
                 <int key="IBDocument.defaultPropertyAccessControl">3</int>
         </data>
 </archive>