Talkback improvements for Settings screens.

Bug: 21164141
Change-Id: I7444261ccf967f6db70c9fe44a00bd3f19ceb975

src/com/android/settings/ConfirmLockPattern.java

@@ -178,6 +178,7 @@ public class ConfirmLockPattern extends ConfirmDeviceCredentialBaseActivity {
                             return (float)(numRows - row) / numRows;
                         }
                     });
+            setAccessibilityTitle(mHeaderTextView.getText());
             return view;
         }