This allows the app to intercept media requests to modify its URLs.
The callback accepts the URL for the request and returns a modified
URL or null to use the original.
Closes#148
Change-Id: I08352754ace05f318706fd93910097c0fa7696f0
* Update compiler to v20150609.
* Since v20150315:
* Promise.prototype.catch externs now provided by compiler.
* Iterator externs now provided by compiler.
* Variadic function syntax has changed.
* Since v20150505:
* BufferSource extern now provided by compiler.
* Since v20150609:
* VideoPlaybackQuality extern now provided by compiler.
b/21559591
Change-Id: Ie7d030422e132879e28b1bdf538991a27ebc25df
Joey Parrish
Jacob Trimble
Oskar Arvidsson