Revert "Adding freeMemoryForTests static method to WebView."

This reverts commit c6a2a6e20f.

Change-Id: If9e1b3420ee239ab3166850e853d5949821f99e1

core/java/android/webkit/WebView.java

@@ -685,15 +685,6 @@ public class WebView extends AbsoluteLayout
         getFactory().getStatics().setPlatformNotificationsEnabled(false);
     }
 
-    /**
-     * Used only by internal tests to free up memory.
-     * @hide
-     */
-    public static void freeMemoryForTests() {
-        checkThread();
-        getFactory().getStatics().freeMemoryForTests();
-    }
-
     /**
      * Informs WebView of the network state. This is used to set
      * the JavaScript property window.navigator.isOnline and

core/java/android/webkit/WebViewFactoryProvider.java

@@ -49,11 +49,6 @@ public interface WebViewFactoryProvider {
          */
         String getDefaultUserAgent(Context context);
 
-        /**
-         * Used for tests only.
-         */
-         void freeMemoryForTests();
-
         /**
          * Implements the API method:
          * {@link android.webkit.WebView#setWebContentsDebuggingEnabled(boolean) }