[Android] Allow setting recently visited search engines as default search engine

chrome/android/java/res/layout/search_engine.xml

Index: chrome/android/java/res/layout/search_engine.xml
diff --git a/chrome/android/java/res/layout/search_engine.xml b/chrome/android/java/res/layout/search_engine.xml
index c447b5e04bb1b19b062edfb0a1e4ba1f3f62a50d..2a0e0ff4df4c927d671694f30118f27bdf90bc0c 100644
--- a/chrome/android/java/res/layout/search_engine.xml
+++ b/chrome/android/java/res/layout/search_engine.xml
@@ -24,12 +24,19 @@
         android:layout_weight="1"
         android:orientation="vertical">
         <TextView
-            android:id="@+id/description"
+            android:id="@+id/name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:textSize="17sp" />
+            android:textSize="17sp"
+            android:textColor="@color/fre_text_color" />

[gone, 2016/11/28 21:37:01]

I'd just use default_text_color and then tell Rebecca.  It'd be more consistent
with the rest of the UI.

[ltian, 2016/11/29 02:44:02]

Done.

         <TextView
-            android:id="@+id/link"
+            android:id="@+id/url"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="16sp"
+            android:textColor="@color/descriptive_text_color" />
+        <TextView
+            android:id="@+id/location_permission"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginBottom="-12dp"