pkg/unittest: using matcher and mock from packages

pkg/pkg.status

Index: pkg/pkg.status
diff --git a/pkg/pkg.status b/pkg/pkg.status
index 043e11075020e0afcf82dbad96421f5fe6cb60ee..946c26cb1891524ec2e3209685909ba7e96d827f 100644
--- a/pkg/pkg.status
+++ b/pkg/pkg.status
@@ -54,12 +54,12 @@ serialization/test/serialization_test: Skip
 analyzer/test/generated/element_test: Pass, Slow # Issue 16473
 
 [ $runtime == d8 || $runtime == jsshell ]
-unittest/test/unittest_nested_groups_setup_teardown_test: RuntimeError # http://dartbug.com/10109
-stack_trace/test/vm_test: RuntimeError, OK # VM-specific traces
-stack_trace/test/chain_test: Fail # Issues 15171 and 15105
 async/test/stream_zip_test: RuntimeError, OK # Timers are not supported.
-unittest/test/missing_tick_test: Fail # Timer interface not supported: dartbug.com/7728.
 scheduled_test/test/unittest_compatibility_test: RuntimeError # Issue 7728
+stack_trace/test/chain_test: Fail # Issues 15171 and 15105
+stack_trace/test/vm_test: RuntimeError, OK # VM-specific traces
+unittest/test/missing_tick_test: Fail # Timer interface not supported: dartbug.com/7728.
+unittest/test/unittest_nested_groups_setup_teardown_test: RuntimeError # http://dartbug.com/10109
 
 [ $runtime == vm || $runtime == d8 || $runtime == jsshell ]
 polymer/example: Skip # Uses dart:html
@@ -139,8 +139,6 @@ intl/test/find_default_locale_standalone_test: Fail # Issue 8110
 # them in the analyzer.
 mock/test/mock_regexp_negative_test: Skip
 mock/test/mock_stepwise_negative_test: Skip
-unittest/test/mock_regexp_negative_test: Skip
-unittest/test/mock_stepwise_negative_test: Skip
 polymer/example/canonicalization: Skip
 polymer/example/canonicalization2: Skip
 polymer/example/canonicalization3: Skip
@@ -152,8 +150,6 @@ third_party/angular_tests/browser_test: StaticWarning # Issue 15890
 # them in the analyzer.
 mock/test/mock_regexp_negative_test: Skip
 mock/test/mock_stepwise_negative_test: Skip
-unittest/test/mock_regexp_negative_test: Skip
-unittest/test/mock_stepwise_negative_test: Skip
 polymer/example/canonicalization: Skip
 polymer/example/canonicalization2: Skip
 polymer/example/canonicalization3: Skip
@@ -167,7 +163,6 @@ polymer/example/canonicalization3: Skip
 
 [ $compiler == dart2js && $csp ]
 matcher/test/mirror_matchers_test: Skip # Issue 12151
-unittest/test/mirror_matchers_test: Skip # Issue 12151
 polymer/test/noscript_test: Fail # Issue 17326
 polymer/test/js_interop_test: Fail # Issue 17326
 
@@ -180,8 +175,6 @@ mutation_observer: Skip
 # minified.
 matcher/test/*_unminified_test: Skip # DO NOT COPY THIS UNLESS YOU WORK ON DART2JS
 matcher/test/mirror_matchers_test: Fail # Issue 15405
-unittest/test/*_unminified_test: Skip # DO NOT COPY THIS UNLESS YOU WORK ON DART2JS
-unittest/test/mirror_matchers_test: Fail # Issue 15405
 
 [ $compiler == dart2js && $browser ]
 stack_trace/test/vm_test: Fail, OK # VM-specific traces
@@ -260,7 +253,6 @@ polymer/test/unbind_test: Pass, Fail # Issue 15259
 # printed. Unminified versions of these tests exist that test the behavior when
 # not minified.
 matcher/test/*_minified_test: Skip # DO NOT COPY THIS UNLESS YOU WORK ON DART2JS
-unittest/test/*_minified_test: Skip # DO NOT COPY THIS UNLESS YOU WORK ON DART2JS
 
 [ $arch == mips ]
 *: Skip  # Issue 13650
@@ -343,7 +335,6 @@ source_maps/test/parser_test: Pass, Timeout # Issue 13719: Please triage this fa
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 matcher/test/matchers_test: StaticWarning, OK # testing error creating abstract class
-unittest/test/matchers_test: StaticWarning, OK # testing error creating abstract class
 
 [ $runtime == vm && ($system == windows || $system == macos) ]
 watcher/test/*/linux_test: Skip