New snap header drop shadow asset.

Fixes b/10229745.

Change-Id: Idc8c852e797217c703631441e0748d0cd1e695f7
diff --git a/res/drawable-hdpi/snap_header_gradient.9.png b/res/drawable-hdpi/snap_header_gradient.9.png
index 08d4ff1..1216021 100644
--- a/res/drawable-hdpi/snap_header_gradient.9.png
+++ b/res/drawable-hdpi/snap_header_gradient.9.png
Binary files differ
diff --git a/res/drawable-mdpi/snap_header_gradient.9.png b/res/drawable-mdpi/snap_header_gradient.9.png
index f847fb7..288e677 100644
--- a/res/drawable-mdpi/snap_header_gradient.9.png
+++ b/res/drawable-mdpi/snap_header_gradient.9.png
Binary files differ
diff --git a/res/drawable-xhdpi/snap_header_gradient.9.png b/res/drawable-xhdpi/snap_header_gradient.9.png
index 05a2af8..135c10d 100644
--- a/res/drawable-xhdpi/snap_header_gradient.9.png
+++ b/res/drawable-xhdpi/snap_header_gradient.9.png
Binary files differ