Linux: make it possible to undo changes made by replace_gyp_files.py

Linux: make it possible to undo changes made by replace_gyp_files.py

See https://groups.google.com/a/chromium.org/d/msg/chromium-packagers/X1Q6P60JZHM/uol7IsRv0-oJ
for more info.

BUG=none
R=maruel@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=202616

[Ryan Sleevi, 2013-05-28 17:43:11]

From that thread, is this actually needed?

[Paweł Hajdan Jr., 2013-05-28 17:52:56]

On 2013/05/28 17:43:11, Ryan Sleevi wrote:
> From that thread, is this actually needed?

Yes. Disabling sanity checks in distro packages is not a good thing.

I think distro people now have rather low expectations of what the project will
do about their feedback, but I'd like to change that.

[Ryan Sleevi, 2013-05-28 17:54:24]

Well, please realize I don't have Python readability - so you'll want a
different reviewer.

[Paweł Hajdan Jr., 2013-05-28 18:05:57]

Marc-Antoine, could you take a look?

[M-A Ruel, 2013-05-28 18:09:47]

On 2013/05/28 17:54:24, Ryan Sleevi wrote:
> Well, please realize I don't have Python readability - so you'll want a
> different reviewer.

I don't have either, but lgtm.

[Paweł Hajdan Jr., 2013-05-28 18:54:30]

Committed patchset #1 manually as r202616 (presubmit successful).