texdata gm: allocate gTextureData on the heap.

This GM is triggering a stack overflow on my laptop when I run it with dm.  As
I understand it, the default stack size on a Mac is 64K, but this allocates 640K.

BUG=
R=bsalomon@google.com, robertphillips@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/26440006

git-svn-id: http://skia.googlecode.com/svn/trunk@11801 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed