Parse the script_badge manifest section.

chrome/common/extensions/extension_manifest_constants.h

Index: chrome/common/extensions/extension_manifest_constants.h
diff --git a/chrome/common/extensions/extension_manifest_constants.h b/chrome/common/extensions/extension_manifest_constants.h
index 8dbeaa30d7190ddf505629062620103e596f4977..4b54cd3bfbe2a9f0d3812dc4e62292f4daa80015 100644
--- a/chrome/common/extensions/extension_manifest_constants.h
+++ b/chrome/common/extensions/extension_manifest_constants.h
@@ -104,6 +104,7 @@ namespace extension_manifest_keys {
   extern const char kRunAt[];
   extern const char kSandboxedPages[];
   extern const char kSandboxedPagesCSP[];
+  extern const char kScriptBadge[];
   extern const char kShiftKey[];
   extern const char kShortcutKey[];
   extern const char kSignature[];
@@ -282,6 +283,7 @@ namespace extension_manifest_errors {
   extern const char kInvalidSandboxedPagesList[];
   extern const char kInvalidSandboxedPage[];
   extern const char kInvalidSandboxedPagesCSP[];
+  extern const char kInvalidScriptBadge[];
   extern const char kInvalidSignature[];
   extern const char kInvalidTheme[];
   extern const char kInvalidThemeColors[];
@@ -320,6 +322,8 @@ namespace extension_manifest_errors {
   extern const char kPlatformAppNeedsManifestVersion2[];
   extern const char kOneUISurfaceOnly[];
   extern const char kReservedMessageFound[];
+  extern const char kScriptBadgeRequiresFlag[];
+  extern const char kScriptBadgeIconIgnored[];
   extern const char kWebRequestConflictsWithLazyBackground[];
 #if defined(OS_CHROMEOS)
   extern const char kIllegalPlugins[];