Disable few DumpAccessibilityEventsTest

TBR=odejesush@chromium.org
NOTRY=true

Bug: 1047282
Change-Id: I430d96beb39ddf88c3bc9ab94db49fdbb5d5be29
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2031549Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#736943}

content/browser/accessibility/dump_accessibility_events_browsertest.cc

@@ -290,8 +290,9 @@ IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
   RunEventTest(FILE_PATH_LITERAL("aria-grabbed-changed.html"));
 }
 
+// crbug.com/1047282: disabled due to flakiness.
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
-                       AccessibilityEventsAriaHasPopupChanged) {
+                       DISABLED_AccessibilityEventsAriaHasPopupChanged) {
   RunEventTest(FILE_PATH_LITERAL("aria-haspopup-changed.html"));
 }
 
@@ -410,8 +411,10 @@ IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
   RunEventTest(FILE_PATH_LITERAL("aria-slider-valuetext-change.html"));
 }
 
-IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
-                       AccessibilityEventsAriaSpinButtonValueBothChange) {
+// crbug.com/1047282: disabled due to flakiness.
+IN_PROC_BROWSER_TEST_P(
+    DumpAccessibilityEventsTest,
+    DISABLED_AccessibilityEventsAriaSpinButtonValueBothChange) {
   RunEventTest(FILE_PATH_LITERAL("aria-spinbutton-value-both-change.html"));
 }
 
@@ -539,8 +542,9 @@ IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
   RunEventTest(FILE_PATH_LITERAL("expanded-changed.html"));
 }
 
+// crbug.com/1047282: disabled due to flakiness.
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
-                       AccessibilityEventsFormRequiredChanged) {
+                       DISABLED_AccessibilityEventsFormRequiredChanged) {
   RunEventTest(FILE_PATH_LITERAL("form-required-changed.html"));
 }
 
@@ -846,13 +850,15 @@ IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
   RunEventTest(FILE_PATH_LITERAL("menu-opened-closed.html"));
 }
 
+// crbug.com/1047282: disabled due to flakiness.
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
-                       AccessibilityEventsAriaFlowToChange) {
+                       DISABLED_AccessibilityEventsAriaFlowToChange) {
   RunEventTest(FILE_PATH_LITERAL("aria-flow-to.html"));
 }
 
+// crbug.com/1047282: disabled due to flakiness.
 IN_PROC_BROWSER_TEST_P(DumpAccessibilityEventsTest,
-                       AccessibilityEventsSelectAddRemove) {
+                       DISABLED_AccessibilityEventsSelectAddRemove) {
   RunEventTest(FILE_PATH_LITERAL("select-selected-add-remove.html"));
 }