Add profile-switches to signin-internals; move switches to component

components/signin/core/common/signin_switches.h

Index: components/signin/core/common/signin_switches.h
diff --git a/components/signin/core/common/signin_switches.h b/components/signin/core/common/signin_switches.h
index 30bd8d39755f6a401384705f3af9664be684fe15..0b77eee70a75e1369932f3b3bb8999209339597e 100644
--- a/components/signin/core/common/signin_switches.h
+++ b/components/signin/core/common/signin_switches.h
@@ -11,6 +11,11 @@ namespace switches {
 // alongside the definition of their values in the .cc file.
 extern const char kClearTokenService[];
 
+extern const char kEnableWebBasedSignin[];
+extern const char kFastUserSwitching[];
+extern const char kGoogleProfileInfo[];
+extern const char kNewProfileManagement[];
+
 }  // namespace switches
 
 #endif  // COMPONENTS_SIGNIN_CORE_COMMON_SIGNIN_SWITCHES_H_