Revert 176198

Revert 176198

Fixed permissions on build/android/envsetup.sh

> Revert 176176
> > Update Android build to API level 17 and SDK Tools version 21
> > 
> > Some fixes included:
> > - Changes to resource management to account for new R.java packaging
> >   from library projects
> >   (https://android-review.googlesource.com/#/c/43134/).
> > - Fixed the package for some inludes in ModalDialogTest.java. This only
> >   worked because of how we previously used to aggregate all resoures
> >   from the prior layer. With the new packaging, we must use the resource
> >   from the appropriate layer.
> > 
> > BUG=163001, 166434
> > NOTRY=true
> > 
> > Review URL: https://chromiumcodereview.appspot.com/11819047
> 
> TBR=yfriedman@chromium.org
> Review URL: https://codereview.chromium.org/11783108

TBR=smckay@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=176202