Make chrome/browser/chromeos/accessibility compile on Athena with use_ash=0

ash/default_accessibility_delegate.h

Index: ash/default_accessibility_delegate.h
diff --git a/ash/default_accessibility_delegate.h b/ash/default_accessibility_delegate.h
index a9604b7b336514155d82f405dd7b48b133c75611..5680fc01e16a036482eabf803634d2d6e789bae6 100644
--- a/ash/default_accessibility_delegate.h
+++ b/ash/default_accessibility_delegate.h
@@ -21,9 +21,9 @@ class ASH_EXPORT DefaultAccessibilityDelegate : public AccessibilityDelegate {
   void ToggleHighContrast() override;
   bool IsHighContrastEnabled() const override;
   void SetMagnifierEnabled(bool enabled) override;
-  void SetMagnifierType(MagnifierType type) override;
+  void SetMagnifierType(ui::MagnifierType type) override;
   bool IsMagnifierEnabled() const override;
-  MagnifierType GetMagnifierType() const override;
+  ui::MagnifierType GetMagnifierType() const override;
   void SetLargeCursorEnabled(bool enabled) override;
   bool IsLargeCursorEnabled() const override;
   void SetAutoclickEnabled(bool enabled) override;
@@ -34,11 +34,11 @@ class ASH_EXPORT DefaultAccessibilityDelegate : public AccessibilityDelegate {
   bool IsBrailleDisplayConnected() const override;
   void SilenceSpokenFeedback() const override;
   void ToggleSpokenFeedback(
-      AccessibilityNotificationVisibility notify) override;
+      ui::AccessibilityNotificationVisibility notify) override;
   void SaveScreenMagnifierScale(double scale) override;
   double GetSavedScreenMagnifierScale() override;
-  void TriggerAccessibilityAlert(AccessibilityAlert alert) override;
-  AccessibilityAlert GetLastAccessibilityAlert() override;
+  void TriggerAccessibilityAlert(ui::AccessibilityAlert alert) override;
+  ui::AccessibilityAlert GetLastAccessibilityAlert() override;
   void PlayEarcon(int sound_key) override;
   base::TimeDelta PlayShutdownSound() const override;
 
@@ -46,11 +46,11 @@ class ASH_EXPORT DefaultAccessibilityDelegate : public AccessibilityDelegate {
   bool spoken_feedback_enabled_;
   bool high_contrast_enabled_;
   bool screen_magnifier_enabled_;
-  MagnifierType screen_magnifier_type_;
+  ui::MagnifierType screen_magnifier_type_;
   bool large_cursor_enabled_;
   bool autoclick_enabled_;
   bool virtual_keyboard_enabled_;
-  AccessibilityAlert accessibility_alert_;
+  ui::AccessibilityAlert accessibility_alert_;
   DISALLOW_COPY_AND_ASSIGN(DefaultAccessibilityDelegate);
 };