Revert 160681 "Update gtk exclusion rules to account for test fi..."

Reverting because Mac builders failed to compile after the Blink roll
containing this change, failures on CalendarPicker.cpp and
ColorSuggestionPicker.cpp.

> Update gtk exclusion rules to account for test files.
> 
> BUG=None
> TEST=webkit_unit_tests
> R=abarth@chromium.org
> 
> Review URL: https://codereview.chromium.org/47353003

TBR=tfarina@chromium.org

Review URL: https://codereview.chromium.org/46373004

git-svn-id: svn://svn.chromium.org/blink/trunk@160697 bbb929c8-8fbe-4397-9dbb-9b2b20218538