Restore xxxhdpi icons.

Bug: 13653397
Change-Id: I4c7e6336ef0a354bf4dc2ecefd129110fb2f974f
(cherry picked from commit faaec9f4e1c50d08c1050db3a2969452d536a13f)
diff --git a/res/mipmap-xxxhdpi/ic_launcher_mail.png b/res/mipmap-xxxhdpi/ic_launcher_mail.png
new file mode 100644
index 0000000..262e5d5
--- /dev/null
+++ b/res/mipmap-xxxhdpi/ic_launcher_mail.png
Binary files differ
diff --git a/res/mipmap-xxxhdpi/ic_launcher_shortcut_folder.png b/res/mipmap-xxxhdpi/ic_launcher_shortcut_folder.png
new file mode 100644
index 0000000..262e5d5
--- /dev/null
+++ b/res/mipmap-xxxhdpi/ic_launcher_shortcut_folder.png
Binary files differ