[Android] Update more GN paths related to testing/android/ move.

[Android] Update more GN paths related to testing/android/ move.

https://codereview.chromium.org/1079963002/ fixed
one path, but there were two more that needs fixing.

TESTED=Locally passing build using:
gn gen out/Default --args="target_os=\"android\" target_cpu=\"arm\""
ninja -C out/Default test_opus_padding

Committed: https://crrev.com/8af41b356f3d3f97b7cbde771b039a0a46bff0de
Cr-Commit-Position: refs/heads/master@{#324854}

[kjellander_chromium, 2015-04-13 11:42:32]

kjellander@chromium.org changed reviewers:
+ jbudorick@chromium.org, jochen@chromium.org

[kjellander_chromium, 2015-04-13 11:42:32]

Sorry for the need of a second CL to fix this. 
I didn't test things properly in my last one.

[jbudorick, 2015-04-13 12:58:16]

build/android/ lgtm

[jochen (gone - plz use gerrit), 2015-04-13 12:59:57]

lgtm

[kjellander_chromium, 2015-04-13 13:02:43]

The CQ bit was checked by kjellander@chromium.org

[commit-bot: I haz the power, 2015-04-13 13:02:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1067853005/1

[commit-bot: I haz the power, 2015-04-13 15:50:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-13 15:51:07]

Patchset 1 (id:??) landed as
https://crrev.com/8af41b356f3d3f97b7cbde771b039a0a46bff0de
Cr-Commit-Position: refs/heads/master@{#324854}