Re-enabled Android unit tests with updated expected output.

Re-enabled the mark.html and ins.html
DumpAccessibilityTreeTest's on Android platform with updated
expected output.

Bug: 413531
Change-Id: I52fbe1c3ec05be2507eaeab6ffd680bbbeccdecf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1979352
Commit-Queue: Mark Schillaci <mschillaci@google.com>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Auto-Submit: Mark Schillaci <mschillaci@google.com>
Cr-Commit-Position: refs/heads/master@{#726985}

content/test/data/accessibility/html/ins-expected-android.txt

-#<skip -- crbug.com/413531>
 android.webkit.WebView focusable focused scrollable
-++android.view.View clickable name='My favorite browser isABCChrome!'
+++android.view.View
+++++android.view.View name='My favorite browser is '
+++++android.view.View role_description='deletion' name='ABC'
+++++android.view.View name=' '
+++++android.view.View role_description='insertion' name='Chrome'
+++++android.view.View name='!'

content/test/data/accessibility/html/mark-expected-android.txt

-#<skip -- crbug.com/413531>
 android.webkit.WebView focusable focused scrollable
-++android.view.View clickable name='This test is to checkmark tag.'
+++android.view.View
+++++android.view.View name='This test is to check '
+++++android.view.View role_description='highlight' name='mark tag'
+++++android.view.View name='.'