Don't handle NaturalScroll in Chrome but pass it to CMT instead

ash/sticky_keys/sticky_keys_unittest.cc

Index: ash/sticky_keys/sticky_keys_unittest.cc
diff --git a/ash/sticky_keys/sticky_keys_unittest.cc b/ash/sticky_keys/sticky_keys_unittest.cc
index 8ae0a1d402f5da4b5334a72fae940d49a0c2c4b6..8f7a2a33b756a6bae9e6cf513478ccbe5e51839b 100644
--- a/ash/sticky_keys/sticky_keys_unittest.cc
+++ b/ash/sticky_keys/sticky_keys_unittest.cc
@@ -618,9 +618,6 @@ TEST_F(StickyKeysTest, MouseEventLocked) {
 }
 
 TEST_F(StickyKeysTest, ScrollEventOneshot) {
-  // Disable Australlian scrolling.
-  ui::DeviceDataManager::GetInstance()->set_natural_scroll_enabled(true);
-
   scoped_ptr<ui::ScrollEvent> ev;
   scoped_ptr<ui::KeyEvent> kev;
   MockStickyKeysHandlerDelegate* mock_delegate =
@@ -670,9 +667,6 @@ TEST_F(StickyKeysTest, ScrollEventOneshot) {
 }
 
 TEST_F(StickyKeysTest, ScrollDirectionChanged) {
-  // Disable Australlian scrolling.
-  ui::DeviceDataManager::GetInstance()->set_natural_scroll_enabled(true);
-
   scoped_ptr<ui::ScrollEvent> ev;
   scoped_ptr<ui::KeyEvent> kev;
   MockStickyKeysHandlerDelegate* mock_delegate =
@@ -707,9 +701,6 @@ TEST_F(StickyKeysTest, ScrollDirectionChanged) {
 }
 
 TEST_F(StickyKeysTest, ScrollEventLocked) {
-  // Disable Australlian scrolling.
-  ui::DeviceDataManager::GetInstance()->set_natural_scroll_enabled(true);
-
   scoped_ptr<ui::ScrollEvent> ev;
   scoped_ptr<ui::KeyEvent> kev;
   MockStickyKeysHandlerDelegate* mock_delegate =