Unsuppress/fix most indexeddb tests on Dartium

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index 6670bd29010aeda18cd1e4d8793aeaad309753e4..a9c8df5720cea350bafdadb31772ca8a35d2e174 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -15,7 +15,7 @@ mirrors_js_typed_interop_test: Skip # Dartium JSInterop failure
 cross_domain_iframe_test: RuntimeError # Dartium JSInterop failure
 custom/document_register_type_extensions_test/registration: RuntimeError # Dartium JSInterop failure
 custom/element_upgrade_test: RuntimeError # Dartium JSInterop failure
-indexeddb_2_test: Skip # Dartium JSInterop failure
+indexeddb_2_test: Fail # Dartium JSInterop failure. Identity preservation on array deferred copy.
 js_test/transferrables: RuntimeError # Dartium JSInterop failure
 js_test/JsArray: RuntimeError # Dartium JSInterop failure
 native_gc_test: Skip # Dartium JSInterop failure
@@ -23,14 +23,11 @@ storage_quota_test/missingenumcheck: RuntimeError # Dartium JSInterop failure
 storage_quota_test/none: RuntimeError # Dartium JSInterop failure
 transferables_test: RuntimeError # Dartium JSInterop failure
 
-[ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
-form_data_test/functional: Skip # Issue 19726
-indexeddb_1_test/functional: Skip # Issue 19512 (timing out)
-indexeddb_4_test: Skip # Issue 19726
+[ $compiler == none && ($runtime == drt || $runtime == dartium ) ]
 worker_api_test: Fail # Issue 10223
 resource_http_test: Fail # Issue 24203
 
-[ $compiler == none && $mode == debug && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
+[ $compiler == none && $mode == debug && ($runtime == drt || $runtime == dartium ) ]
 datalistelement_test: Skip # Issue 20540
 
 [ $compiler == dart2js ]
@@ -55,24 +52,22 @@ element_animate_test: Fail # Element.animate not supported on these browsers.
 [ $compiler == none && $runtime == dartium && $system == macos]
 canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Pass,Fail # Issue 11834
 
-[ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
+[ $compiler == none && ($runtime == drt || $runtime == dartium ) ]
 # postMessage in dartium always transfers the typed array buffer, never a view
 postmessage_structured_test/typed_arrays: Fail
 # Dartium seems to lose the data from the dispatchEvent.
 async_test: Fail # Uses spawn, not implemented from a DOM isolate in Dartium
 keyboard_event_test: Fail # Issue 13902
 isolates_test: Fail # Issue 13921
-indexeddb_3_test: Skip # Issue 19578.  Timeouts and RuntimeError
 fileapi_test/getFile: Pass, Fail # Issue 20488
 
-[ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) && $mode == debug ]
+[ $compiler == none && ($runtime == drt || $runtime == dartium ) && $mode == debug ]
 websocket_test/websocket: Skip # Issue 17666
 canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Skip # Issue 17666
 
 element_offset_test/offset: RuntimeError # Issue 17550
 request_animation_frame_test: Skip # Times out, and also passes while taking 4.00 minutes. Issue 19127.
 fileapi_test/fileEntry: Pass, RuntimeError # Issue 20488
-indexeddb_5_test: Pass, RuntimeError # Issue 21262
 native_gc_test: Pass, Slow
 
 [ $compiler == none && $runtime == drt && $system == windows ]