Set minimum OS X version to 10.5.x in DevicePermissionPrompt.xib.

chrome/app/nibs/DevicePermissionsPrompt.xib

Index: chrome/app/nibs/DevicePermissionsPrompt.xib
diff --git a/chrome/app/nibs/DevicePermissionsPrompt.xib b/chrome/app/nibs/DevicePermissionsPrompt.xib
index f9437aa83130a44c55c25083ba8aee73fc4ef084..9baa8e0ff593b3ea2c0fae443216541cddf8d099 100644
--- a/chrome/app/nibs/DevicePermissionsPrompt.xib
+++ b/chrome/app/nibs/DevicePermissionsPrompt.xib
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="8.00">
 	<data>
-		<int key="IBDocument.SystemTarget">0</int>
+		<int key="IBDocument.SystemTarget">1050</int>
 		<string key="IBDocument.SystemVersion">12F45</string>
 		<string key="IBDocument.InterfaceBuilderVersion">3084</string>
 		<string key="IBDocument.AppKitVersion">1187.40</string>
@@ -794,7 +794,7 @@ ARcABAAAAAEAAAACARwAAwAAAAEAAQAAAVIAAwAAAAEAAQAAAVMAAwAAAAIAAQABAAAAAA</bytes>
 		<string key="IBDocument.TargetRuntimeIdentifier">IBCocoaFramework</string>
 		<object class="NSMutableDictionary" key="IBDocument.PluginDeclaredDependencies">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin.macosx</string>
-			<real value="0.0" key="NS.object.0"/>
+			<real value="1050" key="NS.object.0"/>
 		</object>
 		<object class="NSMutableDictionary" key="IBDocument.PluginDeclaredDependencyDefaults">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin.macosx</string>