Extract create_sdk build rule to own file to avoid cycle.

Extract create_sdk build rule to own file to avoid cycle.

Also, build Try Dart on dart2js build bots.

R=kustermann@google.com, ricow@google.com

Committed: https://code.google.com/p/dart/source/detail?r=34550

[kustermann, 2014-03-31 10:24:07]

LGTM

[ricow1, 2014-03-31 10:39:57]

LGTM
Filed https://code.google.com/p/dart/issues/detail?id=17913 to move the gyp file
down

https://codereview.chromium.org/219113002/diff/1/dart/dart.gyp
File dart/dart.gyp (right):

https://codereview.chromium.org/219113002/diff/1/dart/dart.gyp#newcode104
dart/dart.gyp:104: # This dependency on create_sdk.gyp:create_sdk does not mean
that the Editor
long line

[ahe, 2014-03-31 11:00:08]

Committed patchset #2 manually as r34550 (presubmit successful).

[ahe, 2014-03-31 11:01:12]

Thank you!

https://codereview.chromium.org/219113002/diff/1/dart/dart.gyp
File dart/dart.gyp (right):

https://codereview.chromium.org/219113002/diff/1/dart/dart.gyp#newcode104
dart/dart.gyp:104: # This dependency on create_sdk.gyp:create_sdk does not mean
that the Editor
On 2014/03/31 10:39:57, ricow1 wrote:
> long line

Done.

[Emily Fortuna, 2014-04-01 00:00:25]

I'm running into some weird behavior trying to build "create_sdk" in my svn
checkouts, I'm guessing as a result of this change. I've seen this behavior on
multiple machines and checkouts.

Deleting the output directory and building clean does NOT fix the problem. 
"gclient sync" also does not fix the problem.

I was able to fix the problem by running "gclient runhooks" specifically, which
is curious because for svn checkouts, "runhooks" is supposed to be run as part
of "sync".

Here's the error:

PhaseScriptExecution Action\ \"create_sdk_py\"
xcodebuild/create_sdk.build/ReleaseIA32/create_sdk_internal.build/Script-3E87446A67856E9D1F8E65B9.sh
    cd /Users/efortuna/dart_checkout_for_perf_testing/dart
    /bin/sh -c
/Users/efortuna/dart_checkout_for_perf_testing/dart/xcodebuild/create_sdk.build/ReleaseIA32/create_sdk_internal.build/Script-3E87446A67856E9D1F8E65B9.sh
note: Creating SDK.
Traceback (most recent call last):
  File "tools/create_sdk.py", line 268, in <module>
    sys.exit(Main(sys.argv))
  File "tools/create_sdk.py", line 247, in Main
    CopySnapshots(SNAPSHOT, SDK_tmp)
  File "tools/create_sdk.py", line 120, in CopySnapshots
    join(sdk_root, 'bin', 'snapshots', snapshot))
  File
"/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py",
line 82, in copyfile
    with open(src, 'rb') as fsrc:
IOError: [Errno 2] No such file or directory:
'/Users/efortuna/dart_checkout_for_perf_testing/dart/xcodebuild/DerivedSources/ReleaseIA32/dartfmt.dart.snapshot'
Command /bin/sh failed with exit code 1

** BUILD FAILED **

The following build commands failed:
PhaseScriptExecution Action\ \"create_sdk_py\"
xcodebuild/create_sdk.build/ReleaseIA32/create_sdk_internal.build/Script-3E87446A67856E9D1F8E65B9.sh
(1 failure)
BUILD FAILED