Disables phantom tabs. I'm not nuking all the code as Nicholas/Glen thought we may yet try them again shortly.

BUG=46852
TEST=none

Review URL: http://codereview.chromium.org/2833026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@50511 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/defaults.h b/chrome/browser/defaults.h
index 4f98d8f..6414290 100644
--- a/chrome/browser/defaults.h
+++ b/chrome/browser/defaults.h
@@ -70,6 +70,9 @@
 // Should always open incognito windows when started with --incognito switch?
 extern const bool kAlwaysOpenIncognitoWindow;
 
+// Are phantom tabs enabled?
+extern const bool kPhantomTabsEnabled;
+
 }  // namespace browser_defaults
 
 #endif  // CHROME_BROWSER_DEFAULTS_H_