Implement Chrome OS accessibility features to highlight focus, caret & cursor.

chrome/browser/chromeos/accessibility/accessibility_manager.cc

Index: chrome/browser/chromeos/accessibility/accessibility_manager.cc
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.cc b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
index 1ea9351304a3af65f6e3a8b3b2596d3e17a2c9af..cdf37a793117fb182481dafa6f2c0c9d0ecefed3 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.cc
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
@@ -33,6 +33,7 @@
 #include "chrome/browser/accessibility/accessibility_extension_api.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/chromeos/accessibility/accessibility_highlight_manager.h"
 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
@@ -901,7 +902,7 @@ void AccessibilityManager::UpdateCaretHighlightFromPref() {
     return;
   caret_highlight_enabled_ = enabled;
 
-  // TODO(dmazzoni): implement feature here.
+  UpdateAccessibilityHighlightingFromPrefs();
 }
 
 void AccessibilityManager::SetCursorHighlightEnabled(bool enabled) {
@@ -929,7 +930,7 @@ void AccessibilityManager::UpdateCursorHighlightFromPref() {
     return;
   cursor_highlight_enabled_ = enabled;
 
-  // TODO(dmazzoni): implement feature here.
+  UpdateAccessibilityHighlightingFromPrefs();
 }
 
 void AccessibilityManager::SetFocusHighlightEnabled(bool enabled) {
@@ -956,7 +957,7 @@ void AccessibilityManager::UpdateFocusHighlightFromPref() {
     return;
   focus_highlight_enabled_ = enabled;
 
-  // TODO(dmazzoni): implement feature here.
+  UpdateAccessibilityHighlightingFromPrefs();
 }
 
 void AccessibilityManager::SetSelectToSpeakEnabled(bool enabled) {
@@ -1013,6 +1014,22 @@ void AccessibilityManager::UpdateSwitchAccessFromPref() {
   // TODO(dmazzoni): implement feature here.
 }
 
+void AccessibilityManager::UpdateAccessibilityHighlightingFromPrefs() {
+  if (!focus_highlight_enabled_ && !caret_highlight_enabled_ &&
+      !cursor_highlight_enabled_) {
+    if (accessibility_highlight_manager_)
+      accessibility_highlight_manager_.reset();
+    return;
+  }
+
+  if (!accessibility_highlight_manager_)
+    accessibility_highlight_manager_.reset(new AccessibilityHighlightManager());
+
+  accessibility_highlight_manager_->HighlightFocus(focus_highlight_enabled_);
+  accessibility_highlight_manager_->HighlightCaret(caret_highlight_enabled_);
+  accessibility_highlight_manager_->HighlightCursor(cursor_highlight_enabled_);
+}
+
 bool AccessibilityManager::IsBrailleDisplayConnected() const {
   return braille_display_connected_;
 }