Event page rebranding: "transient" key is now "persistent" again.

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 aa86c504f9538a438a10bcbe8e83c6fb939171cf..daaedc52854439b9bd8e78628ac13933e93fea7a 100644
--- a/chrome/common/extensions/extension_manifest_constants.h
+++ b/chrome/common/extensions/extension_manifest_constants.h
@@ -19,7 +19,7 @@ namespace extension_manifest_keys {
   extern const char kBackgroundAllowJsAccess[];
   extern const char kBackgroundPage[];
   extern const char kBackgroundPageLegacy[];
-  extern const char kBackgroundTransient[];
+  extern const char kBackgroundPersistent[];
   extern const char kBackgroundScripts[];
   extern const char kBrowserAction[];
   extern const char kBrowseURLs[];
@@ -178,8 +178,8 @@ namespace extension_manifest_errors {
   extern const char kInvalidBackgroundScript[];
   extern const char kInvalidBackgroundScripts[];
   extern const char kInvalidBackgroundInHostedApp[];
-  extern const char kInvalidBackgroundTransient[];
-  extern const char kInvalidBackgroundTransientNoPage[];
+  extern const char kInvalidBackgroundPersistent[];
+  extern const char kInvalidBackgroundPersistentNoPage[];
   extern const char kInvalidBrowserAction[];
   extern const char kInvalidBrowseURL[];
   extern const char kInvalidBrowseURLs[];