tree 3074839d24fd529d63d922957d847128bb326924
parent 0b3e25719d87d9354a1ed6ed208d457d88ced8a6
author Tao Bao <tbao@google.com> 1523652118 -0700
committer Tao Bao <tbao@google.com> 1523658350 -0700

Expose PngHandler via resources.h.

As a private header for testing purpose. PngHandler additionally loads a
given filename if the one with '/res/images' prefix is not available. It
also provides color_type/bit_depth that are parsed from the PNG file.

This allows reusing the same code for the ResourcesTest (renamed from
ResourceTest).

Test: Run recovery_manual_test on marlin.
Change-Id: I3f939d79a1cb1b83a899847dbe2d51bde15d16d8