Don't pre-allocate GrTextBlobCache space

Let the pool handle the initial allocation on first use.

Change-Id: I77e0a84f19ccefa0c3bf298483929345787c0d7e
Reviewed-on: https://skia-review.googlesource.com/22078
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed