Update codesearch links

code.google.com redirects no longer work. This CL replaces links in /extensions/common/api/networking_private.idl
to source.chromium.org equivalent.
This CL was uploaded by git cl split.

R=karandeepb@chromium.org

Change-Id: I9aef715b8de938baeab22c92480cffb3984490fd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2392749
Auto-Submit: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804438}

extensions/common/api/networking_private.idl

@@ -7,7 +7,7 @@
 // API is only valid if called from a browser or app associated with the
 // primary user. See the Open Network Configuration (ONC) documentation for
 // descriptions of properties:
-// <a href="https://code.google.com/p/chromium/codesearch#chromium/src/components/onc/docs/onc_spec.html">
+// <a href="https://source.chromium.org/chromium/chromium/src/+/HEAD:components/onc/docs/onc_spec.md">
 // src/components/onc/docs/onc_spec.html</a>, or the
 // <a href="http://www.chromium.org/chromium-os/chromiumos-design-docs/open-network-configuration">
 // Open Network Configuration</a> page at chromium.org.