Chrome/Chromium rebuild + status icons.

Added Chromium rebuilt icon to 48/apps folder - created Chrome/Beta/Unstable status icons in PNG and SVG with all symlinks through 16 22 and 24 apps/status folders ( << Still needs to be fixed: Chrome probably uses hardcoded path to status icon even though Gnome shell picks up new assets\!).

![google-chrome](https://cloud.githubusercontent.com/assets/5674757/3070385/a781ec74-e2a8-11e3-9c6f-d0402e7ccc3b.png)
![brasero](https://cloud.githubusercontent.com/assets/5674757/3070386/ad06e014-e2a8-11e3-9e6f-9c3fb4a79595.png)
![chromium](https://cloud.githubusercontent.com/assets/5674757/3070390/b6bb1094-e2a8-11e3-96a8-7380a104a443.png)
![google-chrome](https://cloud.githubusercontent.com/assets/5674757/3070392/b6c6ae54-e2a8-11e3-8aeb-179229968cd4.png)
![google-chrome-beta](https://cloud.githubusercontent.com/assets/5674757/3070393/b6c6e2ac-e2a8-11e3-9e6f-777de196f2fa.png)
![google-chrome-unstable](https://cloud.githubusercontent.com/assets/5674757/3070391/b6c698ec-e2a8-11e3-91dd-ff2b7faafee6.png)