Makes Geolocation permissions prompt pretty.

Change-Id: I237fc0845de2297babc7da448a2199c5344e2e83
diff --git a/res/layout/tab.xml b/res/layout/tab.xml
index ea9cd1a..e6ec970 100755
--- a/res/layout/tab.xml
+++ b/res/layout/tab.xml
@@ -19,7 +19,8 @@
      Currently, the only such element is the Geolocation permissions prompt.
 -->
 
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
     android:fitsSystemWindows="true"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent">
@@ -27,7 +28,8 @@
     <!-- Wrapper layout for the WebView, which must be in a FrameLayout. -->
     <FrameLayout android:id="@+id/webview_wrapper"
         android:layout_width="fill_parent"
-        android:layout_height="fill_parent" />
+        android:layout_height="0dip"
+        android:layout_weight="1" />
 
     <!-- Geolocation permissions prompt -->
     <com.android.browser.GeolocationPermissionsPrompt
@@ -35,4 +37,4 @@
         android:layout_width="fill_parent"
         android:layout_height="wrap_content" />
 
-</FrameLayout>
+</LinearLayout>