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
void CrosLibrary::TestApi::SetKeyboardLibrary(

void CrosLibrary::TestApi::SetKeyboardLibrary(
    KeyboardLibrary* library, bool own) {
  library_->keyboard_lib_.SetImpl(library, own);
}
