Check multi-crx path for force update based on manifest entries

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 875c594dd3877a6216affc1dc61631454d9b6abf..507beb55a33d00eddd5aa33f2275963028c89b76 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -91,6 +91,7 @@ extern const char kMIMETypes[];
 extern const char kMimeTypesHandler[];
 extern const char kMinimumChromeVersion[];
 extern const char kMinimumVersion[];
+extern const char kNaClArch[];
 extern const char kNaClModules[];
 extern const char kNaClModulesMIMEType[];
 extern const char kNaClModulesPath[];
@@ -122,6 +123,7 @@ extern const char kPlatformAppBackground[];
 extern const char kPlatformAppBackgroundPage[];
 extern const char kPlatformAppBackgroundScripts[];
 extern const char kPlatformAppContentSecurityPolicy[];
+extern const char kPlatforms[];
 extern const char kPlugins[];
 extern const char kPluginsPath[];
 extern const char kPluginsPublic[];
@@ -146,6 +148,7 @@ extern const char kSpellcheckDictionaryLanguage[];
 extern const char kSpellcheckDictionaryLocale[];
 extern const char kSpellcheckDictionaryPath[];
 extern const char kStorageManagedSchema[];
+extern const char kSubPackagePath[];
 extern const char kSuggestedKey[];
 extern const char kSynthesizeBrowserAction[];
 extern const char kSystemIndicator[];