Build Observatory as part of runtime

runtime/bin/vmservice/observatory/HACKING.txt

Index: runtime/bin/vmservice/observatory/HACKING.txt
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-Dart Observatory Developer Guide
----
-
-Assumptions:
-You are running pub from the latest dev channel release of Dart Editor.
-
-During development you do not need to run dart2js or rebuild the VM (unless
-you are also making changes to the backend). While you're working on your
-feature follow the steps:
-
-1. Open runtime/bin/vmservice/observatory in the Dart Editor
-2. Run pub upgrade
-3. Run dart --observe script.dart
-4. Run index.html in Dartium
-
-At this point you should see the initial Observatory UI and that
-it is communicating with the VM you launched in step 3.
-
-Continue to develop and iterate until you're ready to upload your change
-for review. Upload your change and get an LGTM.
-
-5. Run pub build
-6. Run ./deploy.sh
-
-Note: If you run pub from within the editor you need to make sure that it runs
-in release mode (--mode=release), i.e., output is minified and does not include
-any .dart source files.
-
-At this point you should rebuild your VM and:
-
-7. Launch dart --observe script.dart
-
-In a non-Dart enabled browser navigate to localhost:8181 and ensure
-that your feature works after being compiled to JavaScript.
-
-8. Ensure the vm, standalone, and observatory unit tests still pass:
-python tools/test.py --mode=debug --arch=ia32 --compiler=none --runtime=vm vm/cc standalone/vmservice vmservice
-
-9. Commit your change