MediaRecorder: exporting WebMediaRecorderHandler.h and adding dummy WebMediaRecorderHandler.cpp

BUG=262211

Review URL: https://codereview.chromium.org/1337543002

git-svn-id: svn://svn.chromium.org/blink/trunk@202081 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed
tree: fbc27d737a9872ab7cc82247e37a9a0d23f3a51f
  1. third_party/