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This makes 'WebCodecs' follow the naming rule as other modules like
'WebSocket', 'WebGL', otherwise it would lead to unusual names like
'webgl_web_codecs_video_frame.h'.

Bug: 1142754
Change-Id: I2280e3340be9adf04cd51d426a61f51b590493da
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2570395Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>
Cr-Commit-Position: refs/heads/master@{#834543}