Update browser suggestion icons.

The existing icons for bookmarks, history and search suggestions
in the browser are quite small and don't match the search suggestion
icons used in the rest of the system.
diff --git a/res/drawable/ic_search_category_bookmark.png b/res/drawable/ic_search_category_bookmark.png
index 08b5e74..45755ff 100755
--- a/res/drawable/ic_search_category_bookmark.png
+++ b/res/drawable/ic_search_category_bookmark.png
Binary files differ
diff --git a/res/drawable/ic_search_category_history.png b/res/drawable/ic_search_category_history.png
index 894c254..e5c45f7 100755
--- a/res/drawable/ic_search_category_history.png
+++ b/res/drawable/ic_search_category_history.png
Binary files differ
diff --git a/res/drawable/ic_search_category_suggest.png b/res/drawable/ic_search_category_suggest.png
index ada07e6..a4ed7aa 100755
--- a/res/drawable/ic_search_category_suggest.png
+++ b/res/drawable/ic_search_category_suggest.png
Binary files differ