Add new assets for LMP preview

issue 15544569 c), d), e)

Change-Id: Ib352ef1fa7c19c3695c82f3ea31936a4b41da5aa
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 9ebb997..e5a17c0 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -1292,6 +1292,10 @@
             }
         });
         widgetButton.setOnTouchListener(getHapticFeedbackTouchListener());
+        if (Utilities.isLmp()) {
+            ((TextView) widgetButton).setCompoundDrawablesWithIntrinsicBounds(0,
+                    R.drawable.widget_button_l, 0, 0);
+        }
 
         View wallpaperButton = findViewById(R.id.wallpaper_button);
         wallpaperButton.setOnClickListener(new OnClickListener() {
@@ -1304,6 +1308,11 @@
         });
         wallpaperButton.setOnTouchListener(getHapticFeedbackTouchListener());
 
+        if (Utilities.isLmp()) {
+            ((TextView) wallpaperButton).setCompoundDrawablesWithIntrinsicBounds(0,
+                    R.drawable.wallpaper_button_l, 0, 0);
+        }
+
         View settingsButton = findViewById(R.id.settings_button);
         if (hasSettings()) {
             settingsButton.setOnClickListener(new OnClickListener() {
@@ -1315,6 +1324,10 @@
                 }
             });
             settingsButton.setOnTouchListener(getHapticFeedbackTouchListener());
+            if (Utilities.isLmp()) {
+                ((TextView) settingsButton).setCompoundDrawablesWithIntrinsicBounds(0,
+                        R.drawable.setting_button_l, 0, 0);
+            }
         } else {
             settingsButton.setVisibility(View.GONE);
             FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) widgetButton.getLayoutParams();