tree ec96dffc6e25865d6015f754b1a6406621c31bf4
parent 0a17fafd723e8684d1deb4b5ceea58967a0154da
author tsepez <tsepez@chromium.org> 1473973291 -0700
committer Commit bot <commit-bot@chromium.org> 1473973291 -0700

Add string pools to save storage.

Adds string hashes so CFX strings will interoperate with
STL unordered containers.

These will be employed per-document in a subsequent cl.

BUG=pdfium:597

Review-Url: https://codereview.chromium.org/2341683005