Optimizing shadow generation by reusing bitmap.

> Not creating unnecessary bitmaps
> Final bitmap is generated as ALPHA_8 instead of ARGB_8888
> The shadow drawing is done directly in the view

Change-Id: I504fa2ea3abdc1a3c3fb9ad57d6e28880d2584a1
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 5e1f3de..d2f6237 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -119,4 +119,11 @@
     <dimen name="profile_badge_size">24dp</dimen>
     <dimen name="profile_badge_margin">4dp</dimen>
     <dimen name="profile_badge_minimum_top">2dp</dimen>
+
+<!-- Shadows and outlines -->
+    <dimen name="blur_size_thin_outline">1dp</dimen>
+    <dimen name="blur_size_medium_outline">2dp</dimen>
+    <dimen name="blur_size_click_shadow">4dp</dimen>
+    <dimen name="click_shadow_high_shift">2dp</dimen>
+
 </resources>