Exposes an entry point to cajole gadgets which have already been parsed

Added an entry point to DefaultGadgetRewriter (used by Shindig) which
accepts a parsed node.

@3617

[MikeSamuel, 2009-07-31 00:54:51]

http://codereview.appspot.com/98080/diff/1/2
File src/com/google/caja/opensocial/DefaultGadgetRewriter.java (right):

http://codereview.appspot.com/98080/diff/1/2#newcode184
Line 184: scriptElement.appendChild(doc.createTextNode(script.toString()));
This doesn't look right.
It looks like script.toString() will always return the empty string.

[Jasvir, 2009-07-31 02:33:24]

http://codereview.appspot.com/98080/diff/1/2
File src/com/google/caja/opensocial/DefaultGadgetRewriter.java (right):

http://codereview.appspot.com/98080/diff/1/2#newcode184
Line 184: scriptElement.appendChild(doc.createTextNode(script.toString()));
On 2009/07/31 00:54:52, MikeSamuel wrote:
> This doesn't look right.
> It looks like script.toString() will always return the empty string.

You're right - left over cruft. scriptElement already has all the content - this
was adding an empty string to the result. 

Snapshot

[MikeSamuel, 2009-07-31 02:58:36]

LGTM