Revert "Invoke geolocation permissions callback with denied state by default."

This reverts commit 954d1333c478d4dba6c9a0536510da4fd94c0622.

The revert is due to apps calling super.onGeolocationPermissionsShowPrompt see b/22685046

Change-Id: I2a9f42b432a010828a0cafaee064480bb0f91cbe
diff --git a/core/java/android/webkit/WebChromeClient.java b/core/java/android/webkit/WebChromeClient.java
index 0b18bb8..4737e9b 100644
--- a/core/java/android/webkit/WebChromeClient.java
+++ b/core/java/android/webkit/WebChromeClient.java
@@ -284,19 +284,13 @@
      * currently set for that origin. The host application should invoke the
      * specified callback with the desired permission state. See
      * {@link GeolocationPermissions} for details.
-     *
-     * If this method isn't overridden, the callback is invoked with permission
-     * denied state.
-     *
      * @param origin The origin of the web content attempting to use the
      *               Geolocation API.
      * @param callback The callback to use to set the permission state for the
      *                 origin.
      */
     public void onGeolocationPermissionsShowPrompt(String origin,
-            GeolocationPermissions.Callback callback) {
-        callback.invoke(origin, false, false);
-    }
+            GeolocationPermissions.Callback callback) {}
 
     /**
      * Notify the host application that a request for Geolocation permissions,