Create code size treemaps for executable containing GL/Vulkan

DM is already available and should have GL or Vulkan backends in it.

Change-Id: Ie1dad639d0d20aae86ed8d8435c0787e15880767
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261148
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
6 files changed