Add more iframe tests

Help determine causes of flakiness for Hyperlink issues, as well
as flaky tests for aria-hidden iframes.

Use @WAIT-FOR done with 50ms timeout in order to give iframe
sub documents a chance to load. The timeout is not ideal, but
there currently is no better way unless the iframe has some
actual contents to wait for.

Bug: 1158699,1157731
Change-Id: If6526616f6f9ceeac59a80c8ee8c2cb6b4d6e83a
Cq-Do-Not-Cancel-Tryjobs: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611284
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: Nektarios Paisios <nektar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841307}

content/browser/accessibility/dump_accessibility_tree_browsertest.cc

@@ -1704,11 +1704,35 @@ IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest, AccessibilityIframe) {
   RunHtmlTest(FILE_PATH_LITERAL("iframe.html"));
 }
 
+IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
+                       AccessibilityIframeAriaHidden) {
+  RunHtmlTest(FILE_PATH_LITERAL("iframe-aria-hidden.html"));
+}
+
+IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest, AccessibilityIframeCreate) {
+  RunHtmlTest(FILE_PATH_LITERAL("iframe-create.html"));
+}
+
+IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
+                       AccessibilityIframeCreateEmpty) {
+  RunHtmlTest(FILE_PATH_LITERAL("iframe-create-empty.html"));
+}
+
+IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
+                       AccessibilityIframeEmptyPositioned) {
+  RunHtmlTest(FILE_PATH_LITERAL("iframe-empty-positioned.html"));
+}
+
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
                        AccessibilityIframeScrollable) {
   RunHtmlTest(FILE_PATH_LITERAL("iframe-scrollable.html"));
 }
 
+IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
+                       AccessibilityIframeSrcdocChanged) {
+  RunHtmlTest(FILE_PATH_LITERAL("iframe-srcdoc-changed.html"));
+}
+
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityTreeTest,
                        AccessibilityIframePostEnable) {
   enable_accessibility_after_navigating_ = true;

content/test/data/accessibility/html/iframe-aria-hidden-expected-android.txt

+android.webkit.WebView focusable focused scrollable
+++android.view.View invisible
+++++android.view.View scrollable
+++android.view.View invisible
+++++android.view.View scrollable

content/test/data/accessibility/html/iframe-aria-hidden-expected-auralinux.txt

+[document web]
+++[internal frame]
+++++[document web]
+++[internal frame]
+++++[document web]
\ No newline at end of file

content/test/data/accessibility/html/iframe-aria-hidden-expected-blink.txt

+rootWebArea
+++genericContainer ignored
+++++genericContainer ignored
+++++++iframe invisible
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored
+++++++iframe invisible
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored

content/test/data/accessibility/html/iframe-aria-hidden-expected-mac.txt

+AXWebArea

content/test/data/accessibility/html/iframe-aria-hidden-expected-uia-win.txt

+Document
+++Document IsControlElement=false
+++++Document
+++Document IsControlElement=false
+++++Document

content/test/data/accessibility/html/iframe-aria-hidden-expected-win.txt

+ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE ia2_hypertext='<obj0><obj1>'
+++IA2_ROLE_INTERNAL_FRAME INVISIBLE ia2_hypertext='<obj0>'
+++++ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
+++IA2_ROLE_INTERNAL_FRAME INVISIBLE ia2_hypertext='<obj0>'
+++++ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
\ No newline at end of file

content/test/data/accessibility/html/iframe-aria-hidden.html

+<!--
+@WIN-ALLOW:ia2_hypertext=*
+-->
+<iframe tabindex="-1" aria-hidden="true" src="frame/empty.html"
+        style="position: absolute; width: 9em; height: 9em; top: -99em;">
+</iframe>
+<!-- Use a unique @src for code that ensures all iframes are loaded -->
+<iframe aria-hidden="true" src="frame/empty.html#2"
+        style="position: absolute; width: 9em; height: 9em; top: -99em;">
+</iframe>

content/test/data/accessibility/html/iframe-create-empty-expected-android.txt

+android.webkit.WebView focusable focused scrollable
+++android.view.View
+++++android.view.View
+++++++android.view.View scrollable
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-empty-expected-auralinux.txt

+[document web]
+++[section]
+++++[internal frame]
+++++++[document web]
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-empty-expected-blink.txt

+rootWebArea
+++genericContainer ignored
+++++genericContainer
+++++++iframe
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored

content/test/data/accessibility/html/iframe-create-empty-expected-mac.txt

+AXWebArea
+++AXGroup
+++++AXGroup
+++++++AXWebArea
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-empty-expected-uia-win.txt

+Document
+++Group IsControlElement=false
+++++Document
+++++++Document
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-empty-expected-win.txt

+ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE ia2_hypertext='<obj0>'
+++IA2_ROLE_SECTION ia2_hypertext='<obj0>'
+++++IA2_ROLE_INTERNAL_FRAME ia2_hypertext='<obj0>'
+++++++ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-empty.html

+<!--
+@WIN-ALLOW:ia2_hypertext=*
+-->
+<body>
+</body>
+<script>
+  const iframe = document.createElement('iframe');
+  iframe.src = 'frame/empty.html';
+  document.body.appendChild(iframe);
+</script>

content/test/data/accessibility/html/iframe-create-expected-android.txt

+android.webkit.WebView focusable focused scrollable
+++android.view.View
+++++android.view.View
+++++++android.view.View scrollable
+++++++++android.view.View
+++++++++++android.view.View role_description='link' clickable focusable link name='done'
+++++++++++++android.widget.TextView name='done'

content/test/data/accessibility/html/iframe-create-expected-auralinux.txt

+[document web]
+++[section]
+++++[internal frame]
+++++++[document web]
+++++++++[section]
+++++++++++[link] name='done'
+++++++++++++[static] name='done'
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-expected-blink.txt

+rootWebArea
+++genericContainer ignored
+++++genericContainer
+++++++iframe
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer
+++++++++++++++link name='done'
+++++++++++++++++staticText name='done'
+++++++++++++++++++inlineTextBox name='done'

content/test/data/accessibility/html/iframe-create-expected-mac.txt

+AXWebArea
+++AXGroup
+++++AXGroup
+++++++AXWebArea
+++++++++AXGroup
+++++++++++AXLink AXDescription='done'
+++++++++++++AXStaticText AXValue='done'

content/test/data/accessibility/html/iframe-create-expected-uia-win.txt

+Document
+++Group IsControlElement=false
+++++Document
+++++++Document
+++++++++Group IsControlElement=false
+++++++++++Hyperlink Name='done'
+++++++++++++Text Name='done' IsControlElement=false
\ No newline at end of file

content/test/data/accessibility/html/iframe-create-expected-win.txt

+ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE ia2_hypertext='<obj0>'
+++IA2_ROLE_SECTION ia2_hypertext='<obj0>'
+++++IA2_ROLE_INTERNAL_FRAME ia2_hypertext='<obj0>'
+++++++ROLE_SYSTEM_DOCUMENT value='about:srcdoc' READONLY FOCUSABLE ia2_hypertext='<obj0>'
+++++++++IA2_ROLE_SECTION ia2_hypertext='<obj0>'
+++++++++++ROLE_SYSTEM_LINK name='done' FOCUSABLE ia2_hypertext='done'
+++++++++++++ROLE_SYSTEM_STATICTEXT name='done' ia2_hypertext='done'

content/test/data/accessibility/html/iframe-create.html

+<!--
+@WIN-ALLOW:ia2_hypertext=*
+@WAIT-FOR:done
+-->
+<body>
+</body>
+<script>
+  const iframe = document.createElement('iframe');
+  iframe.srcdoc = '<a href="/">done</a>';
+  document.body.appendChild(iframe);
+</script>

content/test/data/accessibility/html/iframe-empty-positioned-expected-android.txt

+android.webkit.WebView focusable focused scrollable
+++android.view.View
+++++android.view.View scrollable
+++android.view.View
+++++android.view.View scrollable

content/test/data/accessibility/html/iframe-empty-positioned-expected-auralinux.txt

+[document web]
+++[internal frame]
+++++[document web]
+++[internal frame]
+++++[document web]
\ No newline at end of file

content/test/data/accessibility/html/iframe-empty-positioned-expected-blink.txt

+rootWebArea
+++genericContainer ignored
+++++genericContainer ignored
+++++++iframe
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored
+++++++iframe
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored

content/test/data/accessibility/html/iframe-empty-positioned-expected-mac.txt

+AXWebArea
+++AXGroup
+++++AXWebArea
+++AXGroup
+++++AXWebArea

content/test/data/accessibility/html/iframe-empty-positioned-expected-uia-win.txt

+Document
+++Document
+++++Document
+++Document
+++++Document

content/test/data/accessibility/html/iframe-empty-positioned-expected-win.txt

+ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE ia2_hypertext='<obj0><obj1>'
+++IA2_ROLE_INTERNAL_FRAME ia2_hypertext='<obj0>'
+++++ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
+++IA2_ROLE_INTERNAL_FRAME ia2_hypertext='<obj0>'
+++++ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
\ No newline at end of file

content/test/data/accessibility/html/iframe-empty-positioned.html

+<!--
+@WIN-ALLOW:ia2_hypertext=*
+-->
+<iframe tabindex="-1" src="frame/empty.html"
+        style="position: absolute; width: 9em; height: 9em; top: -99em;">
+</iframe>
+<!-- Use a unique @src for code that ensures all iframes are loaded -->
+<iframe onload="iframeLoaded()" src="frame/empty.html#2"
+        style="position: absolute; width: 9em; height: 9em; top: -99em;">
+</iframe>

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-android.txt

+android.webkit.WebView focusable focused scrollable name='done'
+++android.view.View
+++++android.view.View
+++++++android.view.View scrollable
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-auralinux.txt

+[document web] name='done'
+++[section]
+++++[internal frame]
+++++++[document web]
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-blink.txt

+rootWebArea name='done'
+++genericContainer ignored
+++++genericContainer
+++++++iframe
+++++++++rootWebArea
+++++++++++genericContainer ignored
+++++++++++++genericContainer ignored
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-mac.txt

+AXWebArea AXTitle='done'
+++AXGroup
+++++AXGroup
+++++++AXWebArea
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-uia-win.txt

+Document Name='done'
+++Group IsControlElement=false
+++++Document
+++++++Document
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed-expected-win.txt

+ROLE_SYSTEM_DOCUMENT name='done' READONLY FOCUSABLE ia2_hypertext='<obj0>'
+++IA2_ROLE_SECTION ia2_hypertext='<obj0>'
+++++IA2_ROLE_INTERNAL_FRAME ia2_hypertext='<obj0>'
+++++++ROLE_SYSTEM_DOCUMENT value='about:srcdoc' READONLY FOCUSABLE
\ No newline at end of file

content/test/data/accessibility/html/iframe-srcdoc-changed.html

+<!--
+@WIN-ALLOW:ia2_hypertext=*
+@WAIT-FOR:done
+-->
+<body>
+</body>
+<script>
+  const iframe = document.createElement('iframe');
+  iframe.onload = () => {
+    iframe.onload = () => {
+      setTimeout(() => { document.title = 'done' }, 99);
+    };
+    iframe.srcdoc = '';
+  };
+  iframe.srcdoc = '<a href="/">link inside iframe</a>';
+  document.body.appendChild(iframe);
+</script>
+