Update codesearch links

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

R=bradnelson@chromium.org

Change-Id: I82869389eff1a7fb5d2e04c9843f4a5f4dbc6d7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2392708
Auto-Submit: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805480}

native_client_sdk/doc_generated/faq.html

@@ -288,7 +288,7 @@ <h3 id="can-i-use-native-client-for-3d-graphics">Can I use Native Client for 3D
 <p>To alert the user regarding their hardware platform&#8217;s 3D feature set
 before loading a large NaCl application, see <a class="reference internal" href="/native-client/devguide/coding/3D-graphics.html"><em>Vetting the driver in
 Javascript</em></a>.</p>
-<p>Some GL extensions are exposed to Native Client applications, see the <a class="reference external" href="https://code.google.com/p/chromium/codesearch#chromium/src/ppapi/lib/gl/gles2/gles2.c">GLES2
+<p>Some GL extensions are exposed to Native Client applications, see the <a class="reference external" href="https://source.chromium.org/chromium/chromium/src/+/HEAD:ppapi/lib/gl/gles2/gles2.c">GLES2
 file</a>.  This file is part of the GL wrapper supplied by the library
 <code>ppapi_gles2</code> which you&#8217;ll want to include in your project.  In most cases
 extensions map to extensions available on other platforms, or differ very