Remove dead script_badge code.

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 d0e1d88586abbccd77ea3d8d83041330846ccccd..4710bae580ce0120d1631782f532c514eebe6053 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -128,7 +128,6 @@ extern const char kRequirements[];
 extern const char kRunAt[];
 extern const char kSandboxedPages[];
 extern const char kSandboxedPagesCSP[];
-extern const char kScriptBadge[];
 extern const char kSettingsOverride[];
 extern const char kSettingsOverrideAlternateUrls[];
 extern const char kShiftKey[];
@@ -226,7 +225,6 @@ extern const char kLaunchContainerWindow[];
 extern const char kPageActionCommandEvent[];
 extern const char kPageActionTypePermanent[];
 extern const char kPageActionTypeTab[];
-extern const char kScriptBadgeCommandEvent[];
 extern const char kRunAtDocumentEnd[];
 extern const char kRunAtDocumentIdle[];
 extern const char kRunAtDocumentStart[];
@@ -392,7 +390,6 @@ extern const char kInvalidRunAt[];
 extern const char kInvalidSandboxedPagesList[];
 extern const char kInvalidSandboxedPage[];
 extern const char kInvalidSandboxedPagesCSP[];
-extern const char kInvalidScriptBadge[];
 extern const char kInvalidSearchEngineMissingKeys[];
 extern const char kInvalidSearchEngineURL[];
 extern const char kInvalidShortName[];
@@ -461,9 +458,6 @@ extern const char kPermissionUnknownOrMalformed[];
 extern const char kReservedMessageFound[];
 extern const char kUnrecognizedManifestKey[];
 extern const char kUnrecognizedManifestProperty[];
-extern const char kScriptBadgeRequiresFlag[];
-extern const char kScriptBadgeIconIgnored[];
-extern const char kScriptBadgeTitleIgnored[];
 extern const char kWebRequestConflictsWithLazyBackground[];
 #if defined(OS_CHROMEOS)
 extern const char kIllegalPlugins[];