Moves over remaining .dart code references to 'factory' in interface declartions to 'default'

Moves over remaining .dart code references to 'factory' in interface declartions to 'default'

BUG=
TEST=

Committed: https://code.google.com/p/dart/source/detail?r=2752

[zundel, 2011-12-21 22:25:44]

@Matt, could you look at the client and samples directories?

For all but 2 case,s I updated this code mechanically with 

sed -e 's/^\(interface .* \)factory /\1default /' 

@John,  I turned on a warning in dartc for using the 'factory' keyword in an
interface description, and when that is on, any test that uses it fails (even
though its just a warning)

[codefu, 2011-12-21 22:31:51]

On 2011/12/21 22:25:44, zundel wrote:
> @John,  I turned on a warning in dartc for using the 'factory' keyword in an
> interface description, and when that is on, any test that uses it fails (even
> though its just a warning)

LGTM++

[mattsh, 2011-12-21 22:50:34]

LGTM