[Tizen] Add Tizen Murphy resource policy daemon integration

This patch includes Chromium side changes that are needed for
integrating WebMediaPlayer with the Murphy resource policy daemon.
[Tizen] Make content fit to the viewport

This actually means that 'setShrinksViewportContentToFit'
setting should be set. This is necessary for viewport
meta tag enabling on Tizen.
[Temp] Backport https://codereview.chromium.org/560553007 from upstream

Fix compilation with OS X SDK 10.9.