Revert 160745 "Remove unnecessary exclusion rules from web.gyp."

Chromium Mac builder started failing after the Blink roll
containing this change landed.

clang: error: no such file or directory:
'/Volumes/data/b/build/slave/Mac/build/src/third_party/WebKit/Source/core/../../../../xcodebuild/DerivedSources/Release/blink/ColorSuggestionPicker.cpp'

> Remove unnecessary exclusion rules from web.gyp.
> 
> They should not be necessary anymore, since config.gyp:config already provides
> more generic rules matching them and web.gyp:webkit already depends on config.
> 
> BUG=None
> TEST=build still works.
> R=abarth@chromium.org
> 
> Review URL: https://codereview.chromium.org/47833002

TBR=tfarina@chromium.org

Review URL: https://codereview.chromium.org/49523004

git-svn-id: svn://svn.chromium.org/blink/trunk@160782 bbb929c8-8fbe-4397-9dbb-9b2b20218538