Revert "Use GetSourceRoot to find shader location instead of ../../../../"
Revert "Use GetSourceRoot to find shader location instead of ../../../../"

This reverts commit 2053ba44cf4a35b6a3dae9657e8e73750c464d98.

google/orbit,google/orbit,google/orbit,pierricgimmig/orbitprofiler,pierricgimmig/orbitprofiler,pierricgimmig/orbitprofiler,pierricgimmig/orbitprofiler,google/orbit