Add behavior feature for Imprivata in-session extension

Bug: 1101208
Change-Id: Ib1fb7d92548c2f2b7bc909548a7a464fb0034c0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2332614
Commit-Queue: Jit Yao Yap <jityao@google.com>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797166}

extensions/common/features/behavior_feature.cc

@@ -24,6 +24,8 @@ const char kAllowSecondaryKioskAppEnabledOnLaunch[] =
 
 const char kKeyPermissionsInLoginScreen[] = "key_permissions_in_login_screen";
 
+const char kKeyImprivataInSessionExtension[] = "imprivata_in_session_extension";
+
 }  // namespace behavior_feature
 
 }  // namespace extensions

extensions/common/features/behavior_feature.h

@@ -18,6 +18,7 @@ extern const char kSigninScreen[];
 extern const char kAllowDeprecatedAudioApi[];
 extern const char kAllowSecondaryKioskAppEnabledOnLaunch[];
 extern const char kKeyPermissionsInLoginScreen[];
+extern const char kKeyImprivataInSessionExtension[];
 
 }  // namespace behavior_feature