Make search icon slightly larger.

Bug: 15343931
Change-Id: Ie6ccb480bc9152cd84cc52625c7f67934bec2797
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 4db5ae4..9162086 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -111,7 +111,7 @@
     <dimen name="search_box_right_padding">8dp</dimen>
     <!-- Padding around the icon in the search box. -->
     <dimen name="search_box_icon_margin">4dp</dimen>
-    <dimen name="search_box_search_icon_padding">4dp</dimen>
+    <dimen name="search_box_search_icon_padding">2dp</dimen>
     <dimen name="search_box_collapsed_text_margin_left">24dp</dimen>
     <dimen name="search_box_expanded_text_margin_left">26dp</dimen>
     <!-- Size of the icon (voice search, close search) in the search box. -->