Add webstore api to find out if the launcher is enabled.

This is used to allow the webstore to show opt in UI when apps are installed.

BUG=173607


Review URL: https://chromiumcodereview.appspot.com/12092106

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@180397 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 aa974d1..76f0f923 100644
--- a/chrome/browser/extensions/extension_function_histogram_value.h
+++ b/chrome/browser/extensions/extension_function_histogram_value.h
@@ -465,6 +465,7 @@
   ECHOPRIVATE_GETOOBETIMESTAMP,
   FILEBROWSERPRIVATE_VALIDATEPATHNAMELENGTH,
   BROWSINGDATA_SETTINGS,
+  WEBSTOREPRIVATE_GETISLAUNCHERENABLED,
   ENUM_BOUNDARY // Last entry: Add new entries above.
 };