Add some required packages to tools/install_dependencies.sh

https://skia.org/user/quick/linux

I added following to build skia library.
* freeglut3-dev
* libglu1-mesa-dev
* libosmesa6-dev

Minor:
* fix indent
* sort package list in alphabetical order

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2303733003

Review-Url: https://codereview.chromium.org/2303733003
1 file changed