Update Material icons and backgrounds

Bug: 16143083
Change-Id: I6396f725b30e9ef6fa7964a0c9d7eb6d1d97e376
diff --git a/java/res/layout/suggestion_divider.xml b/java/res/layout/suggestion_divider.xml
index dfea017..a5bb6c5 100644
--- a/java/res/layout/suggestion_divider.xml
+++ b/java/res/layout/suggestion_divider.xml
@@ -31,4 +31,5 @@
     android:longClickable="false"
     android:hapticFeedbackEnabled="false"
     android:soundEffectsEnabled="false"
+    android:background="@null"
     style="?attr/suggestionStripViewStyle" />