.gitignore: Ignore src/third_party/khronos/CL.
.gitignore: Ignore src/third_party/khronos/CL.

We started checking out this directory with Crosswalk PR#2426, but since
we do not have it in .gitignore the directory ends up being removed
every time we run gclient sync.

fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk,fujunwei/chromium-crosswalk