Adding third_party/openh264 build files for encoding

third_party/openh264/DEPS

Index: third_party/openh264/DEPS
diff --git a/third_party/openh264/DEPS b/third_party/openh264/DEPS
index d2f34d2ddeb7df2a0e13084961a2d5d0a5cd24c8..db39545240d9f33d2d63d32e86ad1bc40511bdeb 100644
--- a/third_party/openh264/DEPS
+++ b/third_party/openh264/DEPS
@@ -1,3 +1,5 @@
 include_rules = [
+  '+openh264',
   '+testing',
+  '+webrtc',

[Dirk Pranke, 2015/11/23 23:07:07]

what directories are you trying to include here (i.e., what are the full paths)?

[hbos_chromium, 2015/11/25 16:17:02]

third_party/openh264
testing
third_party/webrtc

webrtc headers do #include "webrtc/...", not #include "third_party/webrtc".
If I change the DEPS file to +third_party/webrtc then presubmit fails.

I did the same with third_party/openh264/testing files, #include "openh264/..."
instead of #include "third_party/webrtc/..." (from the third party files'
"perspective" they're not "third party" to themselves I'm thinking).

[Dirk Pranke, 2015/11/25 20:58:58]

I thought the presubmit was failing because it was 'webrtc' instead of
'third_party/webrtc'. I'm not sure why it would fail if you made that change,
or why it's passing now, unless brett's l-g-t-m made the check not
care about non-existent directories.

As long as the CQ is happy, I'm fine w/ whatever works in this regard.

[hbos_chromium, 2015/11/26 12:19:24]

Yeah not sure, but I think the presubmit looks at the #include strings which
starts with "webrtc/" so that's what you have to put in include_rules, whereas
the OWNERS check interprets this as src/webrtc and not src/third_party/webrtc/,
so then there are no valid owners to get lgtm from.

I'll have to land this with NOPRESUBMIT=true I think...

 ]