Reland 178902 Implementation of sessionRestore apis.

BUG=14737
TEST=ExtensionApiTest.SessionRestoreApis
[email protected], [email protected]

Review URL: https://chromiumcodereview.appspot.com/10735007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179426 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_function_histogram_value.h b/chrome/browser/extensions/extension_function_histogram_value.h
index f9ada076..efd4c112 100644
--- a/chrome/browser/extensions/extension_function_histogram_value.h
+++ b/chrome/browser/extensions/extension_function_histogram_value.h
@@ -459,6 +459,8 @@
   WEBVIEW_EXECUTESCRIPT,
   EXPERIMENTAL_NOTIFICATION_UPDATE,
   EXPERIMENTAL_NOTIFICATION_DELETE,
+  SESSIONRESTORE_GETRECENTLYCLOSED,
+  SESSIONRESTORE_RESTORE,
   ENUM_BOUNDARY // Last entry: Add new entries above.
 };