AccessibilityBridge TextField password TextField has correct Android semantics is flaky, Missing: {AndroidSemanticsAction.copy}

[keyonghan]

The post-submit test builder Linux_android android_semantics_integration_test has been almost flaky 100% on every commit.

Example builds:
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_android%20android_semantics_integration_test/3085/overview
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_android%20android_semantics_integration_test/3084/overview
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux_android%20android_semantics_integration_test/3083/overview

[ +262 ms] 00:28 �[32m+8�[0m�[31m -2�[0m: AccessibilityBridge Headings body text does not have Android heading semantics�[0m
[android_semantics_integration_test] [STDOUT] stdout: [ +279 ms] 00:28 �[32m+9�[0m�[31m -2�[0m: AccessibilityBridge Headings (tearDownAll)�[0m
[android_semantics_integration_test] [STDOUT] stdout: [ +171 ms] 00:29 �[32m+9�[0m�[31m -2�[0m: AccessibilityBridge (tearDownAll)�[0m
[android_semantics_integration_test] [STDOUT] stdout: [   +6 ms] E/AccessibilityBridge(12459): Semantics node id does not equal ROOT_NODE_ID.
[android_semantics_integration_test] [STDOUT] stdout: [        ] E/AccessibilityBridge(12459): Semantics node id does not equal ROOT_NODE_ID.
[android_semantics_integration_test] [STDOUT] stdout: [+1096 ms] 00:30 �[32m+9�[0m�[31m -2�[0m: �[31mSome tests failed.�[0m
[android_semantics_integration_test] [STDOUT] stdout: [        ] Consider enabling the flag chain-stack-traces to receive more detailed exceptions.
[android_semantics_integration_test] [STDOUT] stdout: [        ] For example, 'dart test --chain-stack-traces'.
[android_semantics_integration_test] [STDOUT] stderr: [   +1 ms] Unhandled exception:
[android_semantics_integration_test] [STDOUT] stderr: [        ] Dummy exception to set exit code.
[android_semantics_integration_test] [STDOUT] stdout: [+1032 ms] Unregistering signal handlers...
[android_semantics_integration_test] [STDOUT] stdout: [   +1 ms] executing: /opt/s/w/ir/cache/android/sdk/platform-tools/adb -s ZY223CL9H5 shell screencap -p /data/local/tmp/flutter_screenshot.png
[android_semantics_integration_test] [STDOUT] stdout: [+1787 ms] executing: /opt/s/w/ir/cache/android/sdk/platform-tools/adb -s ZY223CL9H5 pull /data/local/tmp/flutter_screenshot.png /opt/s/w/ir/x/w/recipe_cleanup/flutter_logs_dir/drive_01.png
[android_semantics_integration_test] [STDOUT] stdout: [  +14 ms] 

[pdblasi-google]

Issues with the tree breaking were resolved by marking the tests with the bringup attribute in this PR. Investigation into a root problem is still ongoing.

[jmagman]

This is still flaking: https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8789103787419111409/+/u/run_android_semantics_integration_test/test_stdout

[android_semantics_integration_test] [STDOUT] stdout: [+1416 ms] 00:10 �[32m+0�[0m�[31m -1�[0m: AccessibilityBridge TextField TextField has correct Android semantics �[1m�[31m[E]�[0m�[0m
[android_semantics_integration_test] [STDOUT] stdout: [        ]   Expected: AndroidSemanticsNode with className: android.widget.EditText with actions: [AndroidSemanticsAction.click, AndroidSemanticsAction.copy, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText] with flag isEditable: true with flag isFocusable: true with flag isFocused: true with flag isPassword: false
[android_semantics_integration_test] [STDOUT] stdout: [        ]     Actual: AndroidSemanticsNode:<{flags: {isEditable: true, isEnabled: true, isDismissible: false, isCheckable: false, isChecked: false, isFocused: true, isLongClickable: false, isFocusable: true, isPassword: false}, id: 4, text: null, rect: {height: 144, width: 1080, bottom: 128.0, top: 80.0, left: 0.0, right: 360.0}, actions: [131072, 2097152, 16, 128], className: android.widget.EditText, liveRegion: 1, contentDescription: null}>
[android_semantics_integration_test] [STDOUT] stdout: [        ]      Which: Expected actions: [AndroidSemanticsAction.click, AndroidSemanticsAction.copy, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText]
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Actual actions: [AndroidSemanticsAction.clearAccessibilityFocus, AndroidSemanticsAction.click, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText]
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Unexpected: {AndroidSemanticsAction.clearAccessibilityFocus}
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Missing: {AndroidSemanticsAction.copy}

[android_semantics_integration_test] [STDOUT] stdout: [        ] 00:10 �[32m+0�[0m�[31m -1�[0m: AccessibilityBridge TextField password TextField has correct Android semantics�[0m
[android_semantics_integration_test] [STDOUT] stdout: [ +736 ms] 00:10 �[32m+0�[0m�[31m -2�[0m: AccessibilityBridge TextField password TextField has correct Android semantics �[1m�[31m[E]�[0m�[0m
[android_semantics_integration_test] [STDOUT] stdout: [        ]   Expected: AndroidSemanticsNode with className: android.widget.EditText with actions: [AndroidSemanticsAction.click, AndroidSemanticsAction.copy, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText] with flag isEditable: true with flag isFocusable: true with flag isFocused: true with flag isPassword: true
[android_semantics_integration_test] [STDOUT] stdout: [        ]     Actual: AndroidSemanticsNode:<{flags: {isEditable: true, isEnabled: true, isDismissible: false, isCheckable: false, isChecked: false, isFocused: true, isLongClickable: false, isFocusable: true, isPassword: true}, id: 5, text: null, rect: {height: 144, width: 1080, bottom: 592.0, top: 544.0, left: 0.0, right: 360.0}, actions: [131072, 2097152, 16, 128], className: android.widget.EditText, liveRegion: 1, contentDescription: null}>
[android_semantics_integration_test] [STDOUT] stdout: [        ]      Which: Expected actions: [AndroidSemanticsAction.click, AndroidSemanticsAction.copy, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText]
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Actual actions: [AndroidSemanticsAction.clearAccessibilityFocus, AndroidSemanticsAction.click, AndroidSemanticsAction.setSelection, AndroidSemanticsAction.setText]
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Unexpected: {AndroidSemanticsAction.clearAccessibilityFocus}
[android_semantics_integration_test] [STDOUT] stdout: [        ]             Missing: {AndroidSemanticsAction.copy}

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