Introduce VR recovery ui

A version of screen ui with specific adjustments for vr device
compatibility.

Cherry picked from commit a44dba7f4e

Bug: 37779982
Test: "adb reboot recovery" to view
Change-Id: If6b0f26c1b587f8d0176060685b5efb6c67593b1

Android.mk

@@ -76,6 +76,7 @@ LOCAL_SRC_FILES := \
     rotate_logs.cpp \
     screen_ui.cpp \
     ui.cpp \
+    vr_ui.cpp \
     wear_ui.cpp \
     wear_touch.cpp \
 
@@ -196,6 +197,17 @@ LOCAL_STATIC_LIBRARIES := \
 LOCAL_CFLAGS := -Werror
 include $(BUILD_STATIC_LIBRARY)
 
+# vr headset default device
+# ===============================
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := vr_device.cpp
+
+# should match TARGET_RECOVERY_UI_LIB set in BoardConfig.mk
+LOCAL_MODULE := librecovery_ui_vr
+
+include $(BUILD_STATIC_LIBRARY)
+
 include \
     $(LOCAL_PATH)/applypatch/Android.mk \
     $(LOCAL_PATH)/boot_control/Android.mk \