R-Tree -- Don't sort draw commands unless specified.
We expect Webkit and Bink to give us draw commands in a reasonable x,y order.
We can maintain correctness and get a 17% recording speedup for the R-Tree by
not sorting in x and y when bulk-loading.

R=caryclark@google.com, reed@google.com

Review URL: https://codereview.chromium.org/23480002

git-svn-id: http://skia.googlecode.com/svn/trunk@11037 2bbb7eff-a529-9590-31e7-b0007b416f81
6 files changed