Bug 924480 - Part 1: Make search_container focusable before browser_toolbar. r=bnicholson

mobile/android/base/BrowserToolbar.java

@@ -410,6 +410,7 @@ public class BrowserToolbar extends GeckoRelativeLayout
                 }
 
                 if (keyCode == KeyEvent.KEYCODE_BACK) {
+                    // Drop the virtual keyboard.
                     clearFocus();
                     return true;
                 }

mobile/android/base/resources/layout/gecko_app.xml

@@ -55,20 +55,25 @@
                         android:layout_alignParentBottom="true">
         </RelativeLayout>
 
-        <org.mozilla.gecko.BrowserToolbar android:id="@+id/browser_toolbar"
+        <FrameLayout android:id="@+id/search_container"
+                     android:layout_width="fill_parent"
+                     android:layout_height="fill_parent"
+                     android:layout_below="@+id/browser_toolbar"
+                     android:background="@android:color/white"
+                     android:visibility="invisible"/>
+
+        <!-- When focus is cleared from from BrowserToolbar's EditText to
+             lower the virtual keyboard, focus will be returned to the root
+             view. To make sure the EditText is not the first focusable view in
+             the root view, BrowserToolbar should be specified as low in the
+             view hierarchy as possible. -->
+        <org.mozilla.gecko.BrowserToolbar android:id="@id/browser_toolbar"
                 style="@style/BrowserToolbar"
                 android:layout_width="fill_parent"
                 android:layout_height="@dimen/browser_toolbar_height"
                 android:clickable="true"
                 android:focusable="true"/>
 
-        <FrameLayout android:id="@+id/search_container"
-                     android:layout_width="fill_parent"
-                     android:layout_height="fill_parent"
-                     android:layout_below="@id/browser_toolbar"
-                     android:background="@android:color/white"
-                     android:visibility="invisible"/>
-
     </view>
 
     <LinearLayout android:id="@+id/toast"