Make apk targets remove .class files before compile

Make apk targets remove .class files before compile

Apk targets will package all .class files in the output directory into
the apk. If a .java file is moved, the corresponding .class files might
still exist in the output directory, leading to incorrect or failed
builds.

This forces all .java files for a target to be rebuilt when that target
is rebuilt, but this is very fast.

See http://crrev.com/10914080 for the same change to jar targets.

BUG=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=157923

[cjhopman, 2012-09-20 23:08:13]

Removed file that shouldn't be in this CL.

[Isaac (away), 2012-09-20 23:36:51]

lgtm, but wait for trybots to run android tests.

[Yaron, 2012-09-20 23:57:03]

lgtm

[commit-bot: I haz the power, 2012-09-21 00:43:55]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/cjhopman@chromium.org/10959027/5010

[commit-bot: I haz the power, 2012-09-21 03:58:09]

Change committed as 157923