first step for #168, adds dart:js impl to the build

first step for #168, adds dart:js impl to the build

the code most likely does not work yet. But this gets it in so we can iterate more easily, from a clean baseline.

R=jacobr@google.com

Committed: https://github.com/dart-lang/dev_compiler/commit/caa101b9ba54408b894b4efe42564f405dc52868

[Jennifer Messerly, 2015-06-12 21:02:51]

jmesserly@google.com changed reviewers:
+ jacobr@google.com, vsm@google.com

[Jennifer Messerly, 2015-06-12 21:02:58]

Patchset #1 (id:1) has been deleted

[Jennifer Messerly, 2015-06-12 21:03:06]

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh
File tool/build_sdk.sh (right):

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh#newco...
tool/build_sdk.sh:17: --dart-sdk tool/generated_sdk -o lib/runtime/ dart:js \
JS includes core, so we still get it transitively.
We should support more than one source, though:
https://github.com/dart-lang/dev_compiler/issues/219

https://codereview.chromium.org/1179643005/diff/20001/tool/input_sdk/lib/js/d...
File tool/input_sdk/lib/js/dart2js/js_dart2js.dart (right):

https://codereview.chromium.org/1179643005/diff/20001/tool/input_sdk/lib/js/d...
tool/input_sdk/lib/js/dart2js/js_dart2js.dart:6: * Support for interoperating
with JavaScript.
this is a straight up copy from the 1.9.0-dev.4.0 SDK we are based on.
(we should really update at some point, heh)

[Jacob, 2015-06-12 21:07:24]

lgtm

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh
File tool/build_sdk.sh (right):

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh#newco...
tool/build_sdk.sh:17: --dart-sdk tool/generated_sdk -o lib/runtime/ dart:js \
On 2015/06/12 21:03:05, John Messerly wrote:
> JS includes core, so we still get it transitively.
> We should support more than one source, though:
> https://github.com/dart-lang/dev_compiler/issues/219

make this a 
# comment in the shell script
having generate_sdk only build dart:js is a bit odd :)

[Jennifer Messerly, 2015-06-12 22:02:36]

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh
File tool/build_sdk.sh (right):

https://codereview.chromium.org/1179643005/diff/20001/tool/build_sdk.sh#newco...
tool/build_sdk.sh:17: --dart-sdk tool/generated_sdk -o lib/runtime/ dart:js \
On 2015/06/12 21:07:23, Jacob wrote:
> On 2015/06/12 21:03:05, John Messerly wrote:
> > JS includes core, so we still get it transitively.
> > We should support more than one source, though:
> > https://github.com/dart-lang/dev_compiler/issues/219
> 
> make this a 
> # comment in the shell script
> having generate_sdk only build dart:js is a bit odd :)

haha. yes, good point.

[Jennifer Messerly, 2015-06-12 22:17:42]

Committed patchset #2 (id:40001) manually as
caa101b9ba54408b894b4efe42564f405dc52868 (presubmit successful).