chromeos: Replace copy-and-pasted code with macros.

This replaces a bunch of duplicated-per-library cros
function definitions and comments.

BUG=none
TEST=built it

Review URL: http://codereview.chromium.org/6086007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70070 0039d316-1c4b-4281-b951-d872f2087c98
CrosLibrary::CrosLibrary() : library_loader_(NULL),
                             own_library_loader_(false),
                             use_stub_impl_(false),
                             loaded_(false),
                             load_error_(false),
                             test_api_(NULL) {
}

CrosLibrary::CrosLibrary() : library_loader_(NULL),
                             own_library_loader_(false),
                             use_stub_impl_(false),
                             loaded_(false),
                             load_error_(false),
                             test_api_(NULL) {
}
