Plumb through Blink accessibility intents into chrome.automation

This change also adds missing param traits for ui::AXEventIntent which was
already part of ui::AXEvent.  The Blink renderer -> browser IPC has been fully
transitioned to mojo, but the browser -> extension renderer hasn't, so we need
to keep maintaining legacy IPC including param traits in
ui/accessibility/ax_param_traits*.  It was missed previously because no clients
of this member existed from the extension renderer.

[email protected], [email protected]

AX-Relnotes: n/a
Test: manually verify intents appear as part of typing into a text field.
Change-Id: Iba4bdafbfd56399c7467721faf845baf393cdda6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2185511
Commit-Queue: David Tseng <[email protected]>
Reviewed-by: Daniel Cheng <[email protected]>
Reviewed-by: Akihiro Ota <[email protected]>
Reviewed-by: Nektarios Paisios <[email protected]>
Cr-Commit-Position: refs/heads/master@{#768890}
diff --git a/ui/accessibility/PRESUBMIT.py b/ui/accessibility/PRESUBMIT.py
index 15c4f2c3..51a5469 100644
--- a/ui/accessibility/PRESUBMIT.py
+++ b/ui/accessibility/PRESUBMIT.py
@@ -149,6 +149,12 @@
                    'DefaultActionVerb', errs, output_api)
   CheckMatchingEnum(ax_enums, 'MarkerType', automation_enums,
                    'MarkerType', errs, output_api)
+  CheckMatchingEnum(ax_enums, 'Command', automation_enums,
+                   'EventCommandType', errs, output_api)
+  CheckMatchingEnum(ax_enums, 'TextBoundary', automation_enums,
+                   'EventTextBoundaryType', errs, output_api)
+  CheckMatchingEnum(ax_enums, 'MoveDirection', automation_enums,
+                   'EventMoveDirectionType', errs, output_api)
   return errs
 
 # Given a full path to c++ header, return an array of the first static