[Android] Fix proguard

[Android] Fix proguard

Gyp supports only very limited ways of changing behavior based upon
CONFIGURATION_NAME. Particularly, it does not support the way that was
supposed to enable/disable use of proguard.

Instead of trying to switch behavior in gyp, instead pass
CONFIGURATION_NAME, proguard_enabled, and
proguard_enabled_dex_input_path to dex.py and switch the behavior
there.

This also extracts the dex actions into build/android/dex_action.gypi
and uses that for the actions in both build/java.gypi and
build/java_apk.gypi.

BUG=240837
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=200958

[shashi, 2013-05-17 01:22:10]

lgtm

Please verify that size of classes.dex in the apk is reduced on release.

I do not think we need to land this for M27, correct?

[Yaron, 2013-05-17 18:04:31]

lgtm

[commit-bot: I haz the power, 2013-05-17 18:06:20]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/cjhopman@chromium.org/15231006/4001

[commit-bot: I haz the power, 2013-05-17 20:57:07]

Retried try job too often on win_rel for step(s) interactive_ui_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-05-17 21:03:26]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/cjhopman@chromium.org/15231006/4001

[commit-bot: I haz the power, 2013-05-18 02:33:41]

Change committed as 200958