H.264: Default flags and pulling in openh264 and ffmpeg.
Defining use_third_party_h264 directly, and indirectly defining use_openh264 (from third_party/openh264) and ffmpeg_branding (from third_party/ffmpeg).
These will be used in a follow-up CL that adds an encoder and decoder implementation.
The flags are added in this CL so that they can be used by trybots/waterfall bots in GN without "Build argument had no effect" errors. Equivalent GYP changes are also added.
BUG=468365
Review URL: https://codereview.webrtc.org/1575913003
Cr-Commit-Position: refs/heads/master@{#11204}
diff --git a/setup_links.py b/setup_links.py
index 4ef40ea..492c38b 100755
--- a/setup_links.py
+++ b/setup_links.py
@@ -40,6 +40,7 @@
'third_party/colorama',
'third_party/drmemory',
'third_party/expat',
+ 'third_party/ffmpeg',
'third_party/instrumented_libraries',
'third_party/jsoncpp',
'third_party/libc++-static',
@@ -53,6 +54,7 @@
'third_party/lss',
'third_party/nss',
'third_party/ocmock',
+ 'third_party/openh264',
'third_party/openmax_dl',
'third_party/opus',
'third_party/proguard',