Remove service worker concepts from apps/extensions manifest parsing.

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 dffcc97d205a085fd18eb34576301d21f4c5c596..0713909af64b00c93f7af692295eaae61ca0c71c 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -121,8 +121,6 @@ extern const char kPlatformAppBackground[];
 extern const char kPlatformAppBackgroundPage[];
 extern const char kPlatformAppBackgroundScripts[];
 extern const char kPlatformAppContentSecurityPolicy[];
-extern const char kPlatformAppServiceWorker[];
-extern const char kPlatformAppServiceWorkerScript[];
 extern const char kPlugins[];
 extern const char kPluginsPath[];
 extern const char kPluginsPublic[];
@@ -410,7 +408,6 @@ extern const char kInvalidSandboxedPagesCSP[];
 extern const char kInvalidScriptBadge[];
 extern const char kInvalidSearchEngineMissingKeys[];
 extern const char kInvalidSearchEngineURL[];
-extern const char kInvalidServiceWorkerScript[];
 extern const char kInvalidShortName[];
 extern const char kInvalidSignature[];
 extern const char kInvalidSpellcheck[];
@@ -479,7 +476,6 @@ extern const char kUnrecognizedManifestProperty[];
 extern const char kScriptBadgeRequiresFlag[];
 extern const char kScriptBadgeIconIgnored[];
 extern const char kScriptBadgeTitleIgnored[];
-extern const char kServiceWorkerRequiresFlag[];
 extern const char kWebRequestConflictsWithLazyBackground[];
 #if defined(OS_CHROMEOS)
 extern const char kIllegalPlugins[];