Extensions: expose raw debugging protocol via extension API.

BUG=
TEST=

Review URL: http://codereview.chromium.org/6686051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@78593 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index 5f934f35..1e74bc1 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -176,6 +176,7 @@
   static const char kContentSettingsPermission[];
   static const char kContextMenusPermission[];
   static const char kCookiePermission[];
+  static const char kDebuggerPermission[];
   static const char kExperimentalPermission[];
   static const char kGeolocationPermission[];
   static const char kHistoryPermission[];