android: Remove a few unnecessary md5sum invocations.

android: Remove a few unnecessary md5sum invocations.

When the list of implicit inputs of a build edge shrinks, ninja doesn't
rerun it.  The Android build uses complex build actions (e.g. ant) whose
output depend on directory contents and whatnot, and the Android build
by adding "dir/*.java" or similar as implicit inputs.  So it's important
that ninja does rerun these actions when their list of implicit inputs
shrinks.  As a workaround, the Android build passes the md5 of the list of
implicit inputs as "--ignored" parameter to the build action (ninja does
rerun edges whose commandline changes.)

Due to copypasta, this --ignored flag is used in a few places where it's
not actually used (on edges where all inputs are already passed as regular
commandline parameters).

Also remove the --ignored parameter from proguard.py as nothing passes it
any more.

BUG=177552
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=254414

[cjhopman, 2014-02-24 17:46:02]

lgtm

[Nico, 2014-03-02 18:46:18]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2014-03-02 18:46:23]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/175683005/1

[commit-bot: I haz the power, 2014-03-02 19:50:54]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-02 19:50:54]

Retried try job too often on win_x64_rel for step(s) base_unittests,
chrome_elf_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_x64_re...

[Nico, 2014-03-02 20:19:43]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2014-03-02 20:19:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/175683005/1

[commit-bot: I haz the power, 2014-03-02 20:22:18]

Change committed as 254414