fix /etc/ path.

should we switch to /etc/chromium instead?
--- chromium-browser-34.0.1847.116/./chrome/common/chrome_paths.cc~	2014-04-18 02:50:48.000000000 +0300
+++ chromium-browser-34.0.1847.116/./chrome/common/chrome_paths.cc	2014-04-18 04:01:17.224283548 +0300
@@ -525,7 +525,7 @@
           "/etc/opt/chrome/native-messaging-hosts"));
 #else
       cur = base::FilePath(FILE_PATH_LITERAL(
-          "/etc/chromium/native-messaging-hosts"));
+          "/etc/chromium-browser/native-messaging-hosts"));
 #endif
 #endif  // !defined(OS_MACOSX)
       break;