Fix some test suppressions for Chrome 60

tests/html/html.status

 # Copyright (c) 2013, 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.
 
 interactive_test: Skip # Must be run manually.
 cross_frame_test: Skip # Test reloads itself. Issue 18558
 
 [ $compiler == dart2js ]
-indexeddb_1_test/supportsDatabaseNames: Fail
 input_element_test/attributes: Fail # Issue 21555
 wrapping_collections_test: SkipByDesign # Testing an issue that is only relevant to Dartium
 js_typed_interop_default_arg_test/default_value: MissingCompileTimeError # Issue #25759
 mirrors_js_typed_interop_test: Pass, Slow
 js_type_test/dynamic-null-not-Foo: Fail  # Issue 26838
 js_type_test/dynamic-String-not-Foo: Fail  # Issue 26838
 js_type_test/dynamic-String-not-dynamic-Foo: Fail  # Issue 26838
 js_interop_constructor_name_test/HTMLDivElement-types-erroneous1: Fail # Issue 26838
 js_interop_constructor_name_test/HTMLDivElement-types-erroneous2: Fail # Issue 26838
 # ROLL 50 FAILURES START
@@ skipping 81 matching lines @@
 custom_element_method_clash_test: Pass, Timeout # Issue 26789
 custom_element_name_clash_test: Pass, Timeout # Issue 26789
 
 [$runtime == drt || $runtime == chrome || $runtime == chromeOnAndroid ]
 webgl_1_test: Pass, Fail # Issue 8219
 
 [ $compiler == dart2js && $minified ]
 canvas_pixel_array_type_alias_test/types2_runtimeTypeName: Fail, OK # Issue 12605
 
 [ $compiler == dart2js && $runtime == chrome ]
-element_classes_test: RuntimeError
 css_test/supportsPointConversions: Fail # Issues 21710
 css_test/functional: Fail # Issues 21710
 
 [ $runtime == ie11 ]
 canvasrenderingcontext2d_test/arc: Pass, Fail # Pixel unexpected value. Please triage this failure.
 canvasrenderingcontext2d_test/drawImage_video_element: Fail # IE does not support drawImage w/ video element
 canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Fail # IE does not support drawImage w/ video element
 custom/document_register_type_extensions_test/single-parameter: Fail # Issue 13193.
 deferred_multi_app_htmltest: Skip # Times out on IE.  Issue 21537
 element_animate_test: Fail # Element.animate not supported on these browsers.
@@ skipping 202 matching lines @@
 
 [ $compiler == dart2analyzer && $builder_tag == strong ]
 *: Skip # Issue 28649
 
 [ $compiler == dart2js && $fast_startup ]
 custom/constructor_calls_created_synchronously_test: Fail # mirrors not supported
 custom/js_custom_test: Fail # mirrors not supported
 custom/mirrors_test: Fail # mirrors not supported
 custom/mirrors_2_test: Fail # mirrors not supported
 mirrors_js_typed_interop_test: Fail # mirrors not supported