tree 8944872de2d924d3efd76266cc929c6f25199134
parent 2aa01f5ccbf1464b43527c1ffa6b42bafed9ebeb
author Tom Sepez <tsepez@chromium.org> 1523058504 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1523058504 +0000

Add span.h from chromium base.

Allows indexing with better bounds-checking to occur. Some small
modifications are required to deal with PDFium being intentionally
held at C++11 compliance, not C++14.

Use in one place as check on correctness.

Change-Id: Id2875cf0a93980112bc536a93c4f9ec5306c0dac
Reviewed-on: https://pdfium-review.googlesource.com/29671
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>