Add an installType property to the management API

chrome/browser/extensions/extension_management_api_constants.h

Index: chrome/browser/extensions/extension_management_api_constants.h
diff --git a/chrome/browser/extensions/extension_management_api_constants.h b/chrome/browser/extensions/extension_management_api_constants.h
index e1e77fa42a818c4a00f3816e9da79c0dcc703711..ab4c2acd5440b79b8598294b4d9f1f55a1bfb2a8 100644
--- a/chrome/browser/extensions/extension_management_api_constants.h
+++ b/chrome/browser/extensions/extension_management_api_constants.h
@@ -13,6 +13,7 @@ extern const char kAppLaunchUrlKey[];
 extern const char kDisabledReasonKey[];
 extern const char kHostPermissionsKey[];
 extern const char kIconsKey[];
+extern const char kInstallTypeKey[];
 extern const char kIsAppKey[];
 extern const char kMayDisableKey[];
 extern const char kPermissionsKey[];
@@ -35,6 +36,12 @@ extern const char kUserCantModifyError[];
 extern const char kUninstallCanceledError[];
 extern const char kUserDidNotReEnableError[];
 
+// Install types.
+extern const char kInstallTypeNormal[];
+extern const char kInstallTypeDevelopment[];
+extern const char kInstallTypeSideload[];
+extern const char kInstallTypeOther[];
+
 }  // namespace extension_management_api_constants
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MANAGEMENT_API_CONSTANTS_H_