Make the warning level for blink consistent by making sure that config.gyp is included for every target that builds native code.

I found the the missing targets by looking trough the generated .ninja files and looking for missing -Wall or -Werror cflags.

BUG=312287
TBR=cdumez

Review URL: https://codereview.chromium.org/51413003

git-svn-id: svn://svn.chromium.org/blink/trunk@161301 bbb929c8-8fbe-4397-9dbb-9b2b20218538