chromium: remove whole static libraries from libchromium_net

LOCAL_WHOLE_STATIC_LIBRARIES is almost never what you want, it is
generally used when you want a shared library to export the symbols
from a static library to the users of the shared library.  In this
case it appears unnecessary, because there are no unresolved symbols
when LOCAL_WHOLE_STATIC_LIBRARIES is replaced with
LOCAL_STATIC_LIBRARIES.

In addition, libcutils was listed in LOCAL_WHOLE_STATIC_LIBRARIES
as well as LOCAL_SHARED_LIBRARIES.  There is no need to link
statically against libcutils, so remove it from
LOCAL_STATIC_LIBRARIES.

Change-Id: I983e74861bab7a5390bd2fa5b7c9b6e59c634152
Merge tag 'tags/android-4.4_r1' into kitkat-staging

Android 4.4 Release 1.0