Change the download location NSPathControl to refuse first responder.

BUG=None
TEST=Preferences-->Under the Hood. Click on downloads path, don't get awkward blue focus ring.

Review URL: http://codereview.chromium.org/330028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30230 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/nibs/Preferences.xib

@@ -603,7 +603,7 @@
 						<bool key="NSEnabled">YES</bool>
 						<object class="NSPathCell" key="NSCell" id="25958950">
 							<int key="NSCellFlags">606207489</int>
-							<int key="NSCellFlags2">0</int>
+							<int key="NSCellFlags2">33554432</int>
 							<reference key="NSSupport" ref="445696277"/>
 							<reference key="NSControlView" ref="484273049"/>
 							<object class="NSColor" key="NSBackgroundColor">