Improve how we handle packages/ HTML imports. This resolves better any valid

pkg/pkg.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 104 matching lines @@
 [ $runtime == vm && $system == windows ]
 docgen/test/single_library_test: Fail # Issue 11985
 intl/test/find_default_locale_standalone_test: Fail # Issue 8110
 
 [ $compiler == dartanalyzer ]
 # These tests are runtime negative but statically positive, so we skip
 # them in the analyzer.
 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
 
 third_party/angular_tests/browser_test: StaticWarning # Issue 15890
 
 [ $compiler == dart2analyzer ]
 # These tests are runtime negative but statically positive, so we skip
 # them in the analyzer.
 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
 
 third_party/angular_tests/browser_test: StaticWarning # Issue 15890
 
 [ $compiler == dart2js && $runtime == none]
 polymer/example/canonicalization: Skip
+polymer/example/canonicalization2: Skip
+polymer/example/canonicalization3: Skip
 
 [ $compiler == dart2js && $csp ]
 unittest/test/mirror_matchers_test: Skip # Issue 12151
 
 # This test cannot run under CSP because it is injecting a JavaScript polyfill
 mutation_observer: Skip
 
 [ $compiler == dart2js && $minified ]
 # The unminified unittest tests test that the real names of Dart types are
 # printed. Minified versions of these tests exist that test the behavior when
 # minified.
 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
 stack_trace/test/chain_test: Fail # Issues 15171 and 15105
 crypto/test/sha256_test: Slow, Pass
 crypto/test/sha1_test: Slow, Pass
 polymer/example/component: Fail # Issue 13198
-polymer/example/canonicalization/test/canonicalization_test: Fail, OK # tests development only behavior
+polymer/example/canonicalization/test/dev_test: Fail, OK # tests development only behavior
+polymer/example/canonicalization/test/dev2_test: Fail, OK # tests development only behavior
+polymer/example/canonicalization/test/dev3_test: Fail, OK # tests development only behavior
+polymer/example/canonicalization/test/dir/dev_test: Fail, OK # tests development only behavior
+polymer/example/canonicalization/test/dir/dev2_test: Fail, OK # tests development only behavior
 
 [ $compiler == dart2js && $runtime == chromeOnAndroid ]
 docgen/test/single_library_test: Fail # TODO(kasperl): Please triage.
 intl/test/date_time_format_http_request_test: Fail # TODO(kasperl): Please triage.
 
 [ $browser ]
 analyzer/test/generated/ast_test: Fail, OK # Uses dart:io.
 analyzer/test/generated/element_test: Fail, OK # Uses dart:io.
 analyzer/test/generated/parser_test: Fail, OK # Uses dart:io.
 analyzer/test/generated/resolver_test: Fail, OK # Uses dart:io.
@@ skipping 82 matching lines @@
 unittest/test/unittest_setup_test: Fail # 13921
 unittest/test/unittest_single_correct_test: Fail # 13921
 unittest/test/unittest_single_failing_test: Fail # 13921
 unittest/test/unittest_skipped_soloed_nested_test: Fail # 13921
 unittest/test/unittest_teardown_test: Fail # 13921
 unittest/test/unittest_test_returning_future_test: Fail # 13921
 unittest/test/unittest_test_returning_future_using_runasync_test: Fail # 13921
 unittest/test/unittest_testcases_immutable_test: Fail # 13921
 unittest/test/unitttest_group_name_test: Fail # 13921
 polymer/test/custom_event_test: Pass, Crash # 14360
-polymer/example/canonicalization/test/canonicalization_deploy_test: Fail, OK # tests deploy only behavior
+polymer/example/canonicalization/test/deploy_test: Fail, OK # tests deploy only behavior
+polymer/example/canonicalization/test/deploy2_test: Fail, OK # tests deploy only behavior
+polymer/example/canonicalization/test/deploy3_test: Fail, OK # tests deploy only behavior
+polymer/example/canonicalization/test/dir/deploy_test: Fail, OK # tests deploy only behavior
+polymer/example/canonicalization/test/dir/deploy2_test: Fail, OK # tests deploy only behavior
 
 [ $compiler == none && ( $runtime == dartium || $runtime == drt ) && $checked ]
 polymer/test/custom_event_test: Skip # http://dartbug.com/15517
 
 # Skip tests on the VM if the package depends on dart:html
 [ $runtime == vm ]
 custom_element: Skip
 template_binding: Skip
 mutation_observer: Skip
 polymer_expressions/test/syntax_test: Skip
@@ skipping 54 matching lines @@
 collection/test/algorithms_test: PubGetError
 collection/test/iterable_zip_test: PubGetError
 collection/test/priority_queue_test: PubGetError
 collection/test/unmodifiable_collection_test: PubGetError
 collection/test/wrapper_test: PubGetError
 stack_trace/test/chain_test: PubGetError
 stack_trace/test/frame_test: PubGetError
 stack_trace/test/trace_test: PubGetError
 stack_trace/test/vm_test: PubGetError