Add a new command line switch for web sign in.  Code that uses this new
command line switch will be committed later.  This change was broken out
of cl/11092029 to make reviewing easier.

BUG=137118
TEST=no user visible changes


Review URL: https://chromiumcodereview.appspot.com/11148029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@163612 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index c9d4c5a..65d9c63 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -785,6 +785,13 @@
     SINGLE_VALUE_TYPE(switches::kEnableTouchpadThreeFingerClick)
   },
 #endif
+  {
+    "use-web-based-signin-flow",
+    IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_NAME,
+    IDS_FLAGS_USE_WEB_BASED_SIGNIN_FLOW_DESCRIPTION,
+    kOsMac | kOsWin | kOsLinux,
+    SINGLE_VALUE_TYPE(switches::kUseWebBasedSigninFlow)
+  },
 #if defined(USE_ASH)
   {
     "show-launcher-alignment-menu",