kiosk: Add kiosk.required_platform_version manifest key

extensions/common/manifest_constants.h

Index: extensions/common/manifest_constants.h
diff --git a/extensions/common/manifest_constants.h b/extensions/common/manifest_constants.h
index 9aec423de97927eb108fb312c6e8f71dadc3c104..b6978a985dc172897e87794a034496b983635072 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -70,9 +70,11 @@ extern const char kIsolation[];
 extern const char kJs[];
 extern const char kKey[];
 extern const char kKeycode[];
+extern const char kKiosk[];
 extern const char kKioskEnabled[];
 extern const char kKioskOnly[];
 extern const char kKioskMode[];
+extern const char kKioskRequiredPlatformVersion[];
 extern const char kKioskSecondaryApps[];
 extern const char kLanguage[];
 extern const char kLaunch[];
@@ -129,6 +131,7 @@ extern const char kPluginsPath[];
 extern const char kPluginsPublic[];
 extern const char kPublicKey[];
 extern const char kRemoveButton[];
+extern const char kRequiredPlatformVersion[];
 extern const char kRequirements[];
 extern const char kRunAt[];
 extern const char kSandboxedPages[];
@@ -352,6 +355,7 @@ extern const char kInvalidKeyBindingUnknownPlatform[];
 extern const char kInvalidKioskEnabled[];
 extern const char kInvalidKioskOnly[];
 extern const char kInvalidKioskOnlyButNotEnabled[];
+extern const char kInvalidKioskRequiredPlatformVersion[];
 extern const char kInvalidKioskSecondaryApps[];
 extern const char kInvalidKioskSecondaryAppsBadAppEntry[];
 extern const char kInvalidKioskSecondaryAppsBadAppId[];