Revert of Make use of md5_check within process_resources.py

Revert of Make use of md5_check within process_resources.py (patchset #4 id:60001 of https://codereview.chromium.org/1357663002/ )

Reason for revert:
breaks compilation, e.g. https://build.chromium.org/p/chromium/builders/Android/builds/46769/steps/compile/logs/stdio

Original issue's description:
> Make use of md5_check within process_resources.py
>
> This stops process_resources being run unnecessarily when only java source files
> have changed.
>
> BUG=533442
>
> Committed: https://crrev.com/03f85b7b1ff4f61a76630995709257968d8d7eed
> Cr-Commit-Position: refs/heads/master@{#350777}

TBR=pkotwicz@chromium.org,agrieve@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=533442
Committed: https://crrev.com/c5cdc35062bd6b16922074b2d8c5c1f8fc905b9c
Cr-Commit-Position: refs/heads/master@{#350779}

[jochen (gone - plz use gerrit), 2015-09-25 07:26:55]

Created Revert of Make use of md5_check within process_resources.py

[commit-bot: I haz the power, 2015-09-25 07:27:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1370643002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1370643002/1

[commit-bot: I haz the power, 2015-09-25 07:27:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-25 07:29:00]

Patchset 1 (id:??) landed as
https://crrev.com/c5cdc35062bd6b16922074b2d8c5c1f8fc905b9c
Cr-Commit-Position: refs/heads/master@{#350779}

[agrieve, 2015-09-25 14:37:15]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1361713003/ by agrieve@chromium.org.

The reason for reverting is: Fixed --proguard-file being marked as an input when
it's and output. Ensured "all" builds locally..