Add two memory usage benchmarks

Add two memory usage benchmarks

R=pquitslund@google.com

Committed: https://github.com/dart-lang/sdk/commit/f3dc748db533d6533a1effd35f8ccbf217910d63

[Brian Wilkerson, 2016-06-29 23:42:38]

brianwilkerson@google.com changed reviewers:
+ pquitslund@google.com

[pquitslund, 2016-06-29 23:49:21]

lgtm

[Brian Wilkerson, 2016-06-30 14:44:42]

Description was changed from

==========
Add two memory usage benchmarks
==========

to

==========
Add two memory usage benchmarks

R=pquitslund@google.com

Committed:
https://github.com/dart-lang/sdk/commit/f3dc748db533d6533a1effd35f8ccbf217910d63
==========

[Brian Wilkerson, 2016-06-30 14:44:43]

Committed patchset #1 (id:1) manually as
f3dc748db533d6533a1effd35f8ccbf217910d63 (presubmit successful).

[scheglov, 2016-07-06 17:55:04]

scheglov@google.com changed reviewers:
+ scheglov@google.com

[scheglov, 2016-07-06 17:55:04]

lgtm

https://codereview.chromium.org/2111743002/diff/1/pkg/analysis_server/benchma...
File pkg/analysis_server/benchmark/perf/benchmark_local.dart (right):

https://codereview.chromium.org/2111743002/diff/1/pkg/analysis_server/benchma...
pkg/analysis_server/benchmark/perf/benchmark_local.dart:234: 1. Start server,
set 'analyzer' and 'analysis_server' analysis roots.
I as can see, we set only "analyzer" as the analysis root.

https://codereview.chromium.org/2111743002/diff/1/pkg/analysis_server/benchma...
File pkg/analysis_server/benchmark/perf/memory_tests.dart (right):

https://codereview.chromium.org/2111743002/diff/1/pkg/analysis_server/benchma...
pkg/analysis_server/benchmark/perf/memory_tests.dart:101: *  4. Record the time
to finish analysis.
Record the heap size after analysis is finished?