Add LOCAL_PICKUP_FILES to dm and bench makefiles.

Update the generator to include a line for LOCAL_PICKUP_FILES. When
generating makefiles for our tests, they will now have the following line:

LOCAL_PICKUP_FILES := \
    $(LOCAL_PATH)/../resources

This allows testing infrastructure to pick up resource files used by
our tests.

Update expectations files to test LOCAL_PICKUP_FILES.

BUG=skia:2454

Review URL: https://codereview.chromium.org/704393002
2 files changed