Bump default GrResourceCache size to 256MB

Consider rendering an SkPicture to a 1080p, 4x msaa render target:

  1920 * 1080 * (4 color bytes + 1 stencil byte) * 4 samples = 40Mb!

But SkCanvas::drawPicture calls saveLayer, which allocates a duplicate
render target:

  40Mb * 2 = 80Mb!!

So with the original 96MB, a quite conservative msaa render target
almost blows out the entire resource cache just on the backing. This
CL bumps up the default cache size to 256MB.

Change-Id: I756c62f4ee6b9c62b1a3e535f31e15a1ecc3d63f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/292265
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2 files changed