Cleanup: Fixed a few nits in AXObjWrappers and Automation code

TBR: dmazzoni@chromium.org, dtseng@chromium.org
Change-Id: I8fb826b2993e0a032fa77f7d6281980e21fb5394
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067414Reviewed-by: Nektarios Paisios <nektar@chromium.org>
Commit-Queue: Nektarios Paisios <nektar@chromium.org>
Auto-Submit: Nektarios Paisios <nektar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743384}

chrome/browser/ui/aura/accessibility/automation_manager_aura.h

@@ -26,7 +26,7 @@ class NoDestructor;
 
 namespace ui {
 class AXEventBundleSink;
-}
+}  // namespace ui
 
 namespace views {
 class AccessibilityAlertWindow;

extensions/browser/api/automation_internal/automation_event_router.h

@@ -62,7 +62,7 @@ class AutomationEventRouter : public ui::AXEventBundleSink,
       const ExtensionMsg_AccessibilityLocationChangeParams& params) override;
 
   // Notify all automation extensions that an accessibility tree was
-  // destroyed. If |browser_context| is null,
+  // destroyed. If |browser_context| is null, use the currently active context.
   void DispatchTreeDestroyedEvent(
       ui::AXTreeID tree_id,
       content::BrowserContext* browser_context) override;

extensions/browser/api/automation_internal/automation_event_router_interface.h

@@ -40,7 +40,7 @@ class AutomationEventRouterInterface {
       const ExtensionMsg_AccessibilityLocationChangeParams& params) = 0;
 
   // Notify all automation extensions that an accessibility tree was
-  // destroyed. If |browser_context| is null,
+  // destroyed. If |browser_context| is null, use the currently active context.
   virtual void DispatchTreeDestroyedEvent(
       ui::AXTreeID tree_id,
       content::BrowserContext* browser_context) = 0;

ui/accessibility/ax_event_bundle_sink.h

@@ -12,7 +12,7 @@
 
 namespace gfx {
 class Point;
-}
+}  // namespace gfx
 
 namespace ui {
 

ui/views/accessibility/accessibility_alert_window.cc

@@ -41,4 +41,5 @@ void AccessibilityAlertWindow::OnWillDestroyEnv() {
   observer_.RemoveAll();
   alert_window_.reset();
 }
+
 }  // namespace views

ui/views/accessibility/ax_view_obj_wrapper.cc

@@ -24,7 +24,7 @@ AXViewObjWrapper::AXViewObjWrapper(AXAuraObjCache* aura_obj_cache, View* view)
 AXViewObjWrapper::~AXViewObjWrapper() = default;
 
 bool AXViewObjWrapper::IsIgnored() {
-  return view_ ? view_->GetViewAccessibility().IsIgnored() : true;
+  return !view_ || view_->GetViewAccessibility().IsIgnored();
 }
 
 AXAuraObjWrapper* AXViewObjWrapper::GetParent() {