Skip direct map from apk check for Samsung Mega.

Skip direct map from apk check for Samsung Mega.

Avoid a warning from Samsung knox by skipping attempts to mmap
the apk file for UMA data.  Instead return false, appropriate
since any attempt later to really map the file would similarly
trigger this knox warning.

BUG=448084
Review URL: https://codereview.chromium.org/857833002

Cr-Commit-Position: refs/heads/master@{#312138}
(cherry picked from commit fba86e9cdbf10b89e6b644dbf1451cd67fa53e4f)

R=rmcilroy@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/86948ef332b3eb11aa1cf67a2ce3935f4b91e788

[Andrew Hayden (chromium.org), 2015-01-20 09:48:55]

andrewhayden@chromium.org changed reviewers:
+ kerz@chromium.org, rmcilroy@chromium.org, simonb@chromium.org

[rmcilroy, 2015-01-20 09:50:27]

On 2015/01/20 09:48:55, Andrew Hayden wrote:
> mailto:andrewhayden@chromium.org changed reviewers:
> + mailto:kerz@chromium.org, mailto:rmcilroy@chromium.org,
mailto:simonb@chromium.org

lgtm, thanks.

[Andrew Hayden (chromium.org), 2015-01-20 09:53:12]

Committed patchset #1 (id:1) manually as
86948ef332b3eb11aa1cf67a2ce3935f4b91e788 (presubmit successful).