provide access to ignore manager when analysis server is running
and add flag to start vm observatory service when debugging analysis server

BUG=
R=scheglov@google.com

Review URL: https://codereview.chromium.org//792963002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42265 260f80e4-7a28-3924-810f-c04153c831b5
Remove old instrumentation

R=scheglov@google.com

Review URL: https://codereview.chromium.org//784623004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42267 260f80e4-7a28-3924-810f-c04153c831b5
Remove stale status-line in dart2js_extra.

R=ahe@google.com

Review URL: https://codereview.chromium.org//789323002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42268 260f80e4-7a28-3924-810f-c04153c831b5
Make StringBuffer.write easier to inline

When combined with trivial dead store elimination (https://chromiumcodereview.appspot.com/780403003/), converts more StringBuffers into local variables.

R=floitsch@google.com

Review URL: https://codereview.chromium.org//790013002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42269 260f80e4-7a28-3924-810f-c04153c831b5
Add a [prints] matcher to the matcher library.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//766653005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42270 260f80e4-7a28-3924-810f-c04153c831b5
get analysis server snapshot from sdk

R=scheglov@google.com

Review URL: https://codereview.chromium.org//794853002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42271 260f80e4-7a28-3924-810f-c04153c831b5