Mac about box shouldn't be a floater

chrome/app/nibs/About.xib

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                         <object class="NSCustomObject" id="1001">
                                 <string key="NSClassName">AboutWindowController</string>
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                                 <string key="NSClassName">FirstResponder</string>
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                                 <string key="NSWindowTitle">^IDS_ABOUT_CHROME_TITLE</string>
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                                                                         <object class="NSTextFieldCell" key="NSCell" id="881628032">
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                                                                         <object class="NSTextFieldCell" key="NSCell" id="625581420">
                                                                                 <int key="NSCellFlags">68288064</int>
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                                                                                 <string key="NSContents">^IDS_PRODUCT_NAME</string>
                                                                                 <object class="NSFont" key="NSSupport">
                                                                                         <string key="NSName">LucidaGrande</string>
                                                                                         <double key="NSSize">2.400000e+01</double>
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                                                                                 <reference key="NSControlView" ref="308038257"/>
                                                                                 <reference key="NSBackgroundColor" ref="782671173"/>
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@@ skipping 496 matching lines @@
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
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                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
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                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
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                                                 <bool key="EncodedWithXMLCoder">YES</bool>
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                                         <string>com.apple.InterfaceBuilder.CocoaPlugin</string>
@@ skipping 169 matching lines @@
                                                 <string key="minorKey">browser/cocoa/tab_strip_model_observer_bridge.h</string>
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