Increase size of output buffer for pix to 32768

We output entire hlsl shaders into this buffer, so 4096 bytes was too small.

BUG=
TEST=

Review URL: https://codereview.appspot.com/5532094

git-svn-id: https://angleproject.googlecode.com/svn/trunk@953 736b8ea6-26fd-11df-bfd4-992fa37f6226
2 files changed