Implement settings in a widnow

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 82cf26cad1ecd61dc65a209f43512fad1bff796f..cbaeed765cc3e42627bd8a89d71663a97b337a6a 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -683,6 +683,9 @@ const char kEnableSearchButtonInOmniboxForStrOrIip[] =
 // certificate is accompanied by, or contains, SCTs.
 const char kEnableSignedCertificateTimestampsViewer[] = "enable-sct-viewer";
 
+// Enable settings in a separate browser window per profile.
+const char kEnableSettingsWindow[]          = "enable-settings-window";
+
 // Enable SPDY/4 alpha 2. This is a temporary testing flag.
 const char kEnableSpdy4a2[]                 = "enable-spdy4a2";