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/sync_chromium.py b/sync_chromium.py
index 442ddcd..8699396 100755
--- a/sync_chromium.py
+++ b/sync_chromium.py
@@ -31,7 +31,7 @@
# Bump this whenever the algorithm changes and you need bots/devs to re-sync,
# ignoring the .last_sync_chromium file
-SCRIPT_VERSION = 5
+SCRIPT_VERSION = 6
ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
CHROMIUM_NO_HISTORY = 'CHROMIUM_NO_HISTORY'