remove bindModel, the same effect can be achieved through createInstance

remove bindModel, the same effect can be achieved through createInstance
partial port of https://github.com/Polymer/mdv/commit/86c0d3d8059eebbafab6d919cd805373951873ea

R=sigmund@google.com

Committed: https://code.google.com/p/dart/source/detail?r=25658

[Jennifer Messerly, 2013-07-31 02:47:02]

https://codereview.chromium.org/21093005/diff/3001/tools/dom/templates/html/i...
File tools/dom/templates/html/impl/impl_Element.darttemplate (right):

https://codereview.chromium.org/21093005/diff/3001/tools/dom/templates/html/i...
tools/dom/templates/html/impl/impl_Element.darttemplate:961: DocumentFragment
createInstance(model, [BindingDelegate delegate]) {
it's not always easy to tell which things are intended to be optional from the
JS code, but this one was apparent from trying to use it. Why make me pass a
null BindingDelegate? :)

[Siggi Cherem (dart-lang), 2013-07-31 02:49:18]

lgtm

[Siggi Cherem (dart-lang), 2013-07-31 02:49:53]

ps: note that we'll likely need to fix the use of this in the PolymerElement
class

[Jennifer Messerly, 2013-07-31 02:50:16]

On 2013/07/31 02:49:53, Siggi Cherem (dart-lang) wrote:
> ps: note that we'll likely need to fix the use of this in the PolymerElement
> class

yup. we ready to start bringing code over?

[Jennifer Messerly, 2013-07-31 02:51:56]

Committed patchset #2 manually as r25658 (presubmit successful).