"aapt: warning" fight

"aapt: warning"大作战
[3/3] Transparent glowpad background
Add transparency to the glowpad view background
so the incoming caller's entire picture can be seen.

[3/3] 透明光圈背景

为来电界面光圈背景添加透明度, 从而让整个
来电用户的照片可见.

[1/3] in platform_packages_apps_InCallUI
[2/3] in platform_frameworks_base