Add a very basic preferences window controller with unit test. Fix the prefs ...

chrome/app/nibs/en.lproj/Preferences.xib

Index: chrome/app/nibs/en.lproj/Preferences.xib
===================================================================
--- chrome/app/nibs/en.lproj/Preferences.xib	(revision 14945)
+++ chrome/app/nibs/en.lproj/Preferences.xib	(working copy)
@@ -25,7 +25,7 @@
 		<object class="NSMutableArray" key="IBDocument.RootObjects" id="1000">
 			<bool key="EncodedWithXMLCoder">YES</bool>
 			<object class="NSCustomObject" id="1001">
-				<string key="NSClassName">NSObject</string>
+				<string key="NSClassName">NSWindowController</string>
 			</object>
 			<object class="NSCustomObject" id="1003">
 				<string key="NSClassName">FirstResponder</string>
@@ -37,7 +37,7 @@
 				<int key="NSWindowStyleMask">15</int>
 				<int key="NSWindowBacking">2</int>
 				<string key="NSWindowRect">{{196, 7}, {559, 503}}</string>
-				<int key="NSWTFlags">1677721600</int>
+				<int key="NSWTFlags">1677722624</int>
 				<string key="NSWindowTitle">Preferences</string>
 				<string key="NSWindowClass">NSWindow</string>
 				<nil key="NSViewClass"/>
@@ -2309,6 +2309,14 @@
 		<object class="IBObjectContainer" key="IBDocument.Objects">
 			<object class="NSMutableArray" key="connectionRecords">
 				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">window</string>
+						<reference key="source" ref="1001"/>
+						<reference key="destination" ref="871378074"/>
+					</object>
+					<int key="connectionID">252</int>
+				</object>
 			</object>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<object class="NSArray" key="orderedObjects">
@@ -3781,11 +3789,22 @@
 				</object>
 			</object>
 			<nil key="sourceID"/>
-			<int key="maxID">251</int>
+			<int key="maxID">252</int>
 		</object>
-		<object class="IBClassDescriber" key="IBDocument.Classes"/>
+		<object class="IBClassDescriber" key="IBDocument.Classes">
+			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
+				<bool key="EncodedWithXMLCoder">YES</bool>
+				<object class="IBPartialClassDescription">
+					<string key="className">NSObject</string>
+					<object class="IBClassDescriptionSource" key="sourceIdentifier">
+						<string key="majorKey">IBProjectSource</string>
+						<string key="minorKey">browser/cocoa/tab_strip_model_observer_bridge.h</string>
+					</object>
+				</object>
+			</object>
+		</object>
 		<int key="IBDocument.localizationMode">0</int>
-		<nil key="IBDocument.LastKnownRelativeProjectPath"/>
+		<string key="IBDocument.LastKnownRelativeProjectPath">../../../chrome.xcodeproj</string>
 		<int key="IBDocument.defaultPropertyAccessControl">3</int>
 	</data>
 </archive>