Combine Language & region and Input & gestures in System settings.

Merge preferences into one page, and update test.

Bug: 34976047
Test: make RunSettingsRoboTests
Change-Id: I5f15192e42f6054c02d4c8ffa9f25db3075da409
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index dfa291c..e669454 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -41,14 +41,13 @@
     public static class WifiSettingsActivity extends SettingsActivity { /* empty */ }
     public static class WifiP2pSettingsActivity extends SettingsActivity { /* empty */ }
     public static class InputMethodAndLanguageSettingsActivity extends SettingsActivity { /* empty */ }
-    public static class InputAndGestureSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AvailableVirtualKeyboardActivity extends SettingsActivity { /* empty */ }
     public static class KeyboardLayoutPickerActivity extends SettingsActivity { /* empty */ }
     public static class PhysicalKeyboardActivity extends SettingsActivity { /* empty */ }
     public static class InputMethodAndSubtypeEnablerActivity extends SettingsActivity { /* empty */ }
     public static class SpellCheckersSettingsActivity extends SettingsActivity { /* empty */ }
     public static class LocalePickerActivity extends SettingsActivity { /* empty */ }
-    public static class LanguageAndRegionSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class LanguageAndInputSettingsActivity extends SettingsActivity { /* empty */ }
     public static class UserDictionarySettingsActivity extends SettingsActivity { /* empty */ }
     public static class DisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class NightDisplaySettingsActivity extends SettingsActivity { /* empty */ }