Make browser search consistent with QSB.

Use the arrow icon for the browser search.

Fixes http://b/issue?id=2520802

Change-Id: I5ebc7de2b5df5fe80be730a46da32fee35d5deff

core/java/android/app/SearchDialog.java

@@ -483,7 +483,7 @@ public class SearchDialog extends Dialog implements OnItemClickListener, OnItemS
         int textId = mSearchable.getSearchButtonText(); 
         if (isBrowserSearch()){
             iconLabel = getContext().getResources()
-                    .getDrawable(com.android.internal.R.drawable.ic_btn_search_play);
+                    .getDrawable(com.android.internal.R.drawable.ic_btn_search_go);
         } else if (textId != 0) {
             textLabel = mActivityContext.getResources().getString(textId);  
         } else {