Stamp Chromium+W3C license onto media-source/ files that originated in Blink 
diff --git a/media-source/mediasource-addsourcebuffer.html b/media-source/mediasource-addsourcebuffer.html index 47a2b35..9fc9463 100644 --- a/media-source/mediasource-addsourcebuffer.html +++ b/media-source/mediasource-addsourcebuffer.html 
@@ -1,4 +1,5 @@  <!DOCTYPE html> +<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->  <html>  <head>  <title>MediaSource.addSourceBuffer() test cases</title>