--- a/widget/NativeKeyToDOMKeyName.h
+++ b/widget/NativeKeyToDOMKeyName.h
@@ -20,22 +20,18 @@
 #define KEY_MAP_WIN_JPN(aCPPKeyName, aNativeKey)
 #define KEY_MAP_WIN_KOR(aCPPKeyName, aNativeKey)
 #define KEY_MAP_WIN_OTH(aCPPKeyName, aNativeKey)
 #define KEY_MAP_WIN_CMD(aCPPKeyName, aAppCommand)
 // Mac OS X
 #define KEY_MAP_COCOA(aCPPKeyName, aNativeKey)
 // GTK
 #define KEY_MAP_GTK(aCPPKeyName, aNativeKey)
-// Android and B2G
+// Only for Android
 #define KEY_MAP_ANDROID(aCPPKeyName, aNativeKey)
-// Only for Android
-#define KEY_MAP_ANDROID_EXCEPT_B2G(aCPPKeyName, aNativeKey)
-// Only for B2G
-#define KEY_MAP_B2G(aCPPKeyName, aNativeKey)
 
 #if defined(XP_WIN)
 #if defined(NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX)
 // KEY_MAP_WIN() defines the mapping not depending on keyboard layout.
 #undef KEY_MAP_WIN
 #define KEY_MAP_WIN(aCPPKeyName, aNativeKey) \
   NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, KEY_NAME_INDEX_##aCPPKeyName)
 #elif defined(NS_JAPANESE_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX)
@@ -75,19 +71,16 @@
 #elif defined(MOZ_WIDGET_GTK)
 #undef KEY_MAP_GTK
 #define KEY_MAP_GTK(aCPPKeyName, aNativeKey) \
   NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, KEY_NAME_INDEX_##aCPPKeyName)
 #elif defined(ANDROID)
 #undef KEY_MAP_ANDROID
 #define KEY_MAP_ANDROID(aCPPKeyName, aNativeKey) \
   NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, KEY_NAME_INDEX_##aCPPKeyName)
-#undef KEY_MAP_ANDROID_EXCEPT_B2G
-#define KEY_MAP_ANDROID_EXCEPT_B2G(aCPPKeyName, aNativeKey) \
-  NS_NATIVE_KEY_TO_DOM_KEY_NAME_INDEX(aNativeKey, KEY_NAME_INDEX_##aCPPKeyName)
 #endif
 
 /******************************************************************************
  * Modifier Keys
  ******************************************************************************/
 // Alt
 KEY_MAP_WIN     (Alt, VK_MENU)
 KEY_MAP_WIN     (Alt, VK_LMENU)
@@ -1051,27 +1044,26 @@ KEY_MAP_ANDROID (AppSwitch, AKEYCODE_APP
 
 // Call
 KEY_MAP_ANDROID (Call, AKEYCODE_CALL)
 
 // Camera
 KEY_MAP_ANDROID (Camera, AKEYCODE_CAMERA)
 
 // CameraFocus
-KEY_MAP_ANDROID_EXCEPT_B2G(CameraFocus, AKEYCODE_FOCUS)
+KEY_MAP_ANDROID(CameraFocus, AKEYCODE_FOCUS)
 
 // EndCall
 KEY_MAP_ANDROID (EndCall, AKEYCODE_ENDCALL)
 
 // GoBack
 KEY_MAP_ANDROID (GoBack, AKEYCODE_BACK)
 
 // GoHome
-KEY_MAP_ANDROID_EXCEPT_B2G(GoHome,     AKEYCODE_HOME)
-KEY_MAP_B2G               (HomeScreen, AKEYCODE_HOME)
+KEY_MAP_ANDROID(GoHome,     AKEYCODE_HOME)
 
 // HeadsetHook
 KEY_MAP_ANDROID (HeadsetHook, AKEYCODE_HEADSETHOOK)
 
 // Notification
 KEY_MAP_ANDROID (Notification, AKEYCODE_NOTIFICATION)
 
 // MannerMode
@@ -1283,10 +1275,8 @@ KEY_MAP_ANDROID (SoftRight, AKEYCODE_SOF
 #undef KEY_MAP_WIN
 #undef KEY_MAP_WIN_JPN
 #undef KEY_MAP_WIN_KOR
 #undef KEY_MAP_WIN_OTH
 #undef KEY_MAP_WIN_CMD
 #undef KEY_MAP_COCOA
 #undef KEY_MAP_GTK
 #undef KEY_MAP_ANDROID
-#undef KEY_MAP_ANDROID_EXCEPT_B2G
-#undef KEY_MAP_B2G