Fix behavior of WindowEventDispatcher::SynthesizeMouseMoveEvent().

chrome/browser/chromeos/accessibility/accessibility_manager.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 
 #include "ash/audio/sounds.h"
 #include "ash/autoclick/autoclick_controller.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/metrics/user_metrics_recorder.h"
@@ skipping 353 matching lines @@
         pref_service->GetBoolean(prefs::kAutoclickEnabled) ||
         pref_service->GetBoolean(prefs::kShouldAlwaysShowAccessibilityMenu) ||
         pref_service->GetBoolean(prefs::kScreenMagnifierEnabled) ||
         pref_service->GetBoolean(prefs::kVirtualKeyboardEnabled))
       return true;
   }
   return false;
 }
 
 bool AccessibilityManager::ShouldEnableCursorCompositing() {
-  // TODO(hshi): re-enable this on trunk after fixing issues. See
-  // http://crbug.com/362693, http://crosbug.com/p/28034.
+#if defined(OS_CHROMEOS)
+  if (!profile_)
+    return false;
+  PrefService* pref_service = profile_->GetPrefs();
+  // Enable cursor compositing when one or more of the listed accessibility
+  // features are turned on.
+  if (pref_service->GetBoolean(prefs::kLargeCursorEnabled) ||
+      pref_service->GetBoolean(prefs::kHighContrastEnabled) ||
+      pref_service->GetBoolean(prefs::kScreenMagnifierEnabled))
+    return true;
+#endif
   return false;
 }
 
 void AccessibilityManager::EnableLargeCursor(bool enabled) {
   if (!profile_)
     return;
 
   PrefService* pref_service = profile_->GetPrefs();
   pref_service->SetBoolean(prefs::kLargeCursorEnabled, enabled);
   pref_service->CommitPendingWrite();
@@ skipping 617 matching lines @@
       chrome_vox_loaded_on_lock_screen_;
 }
 
 void AccessibilityManager::PostUnloadChromeVox(Profile* profile) {
   // Do any teardown work needed immediately after ChromeVox actually unloads.
   if (system_sounds_enabled_)
     ash::PlaySystemSoundAlways(SOUND_SPOKEN_FEEDBACK_DISABLED);
 }
 
 }  // namespace chromeos