Merge "Update WebView#clearClientCertPreferences docs."

import android.os.RemoteException;

import android.os.StrictMode;

import android.print.PrintDocumentAdapter;

import android.security.KeyChain;

import android.util.AttributeSet;

import android.util.Log;

import android.util.SparseArray;

    /**

     * Clears the client certificate preferences stored in response

     * to proceeding/cancelling client cert requests. Note that WebView

     * automatically clears these preferences when it receives a

     * {@link KeyChain#ACTION_STORAGE_CHANGED} intent. The preferences are

     * shared by all the WebViews that are created by the embedder application.

     * automatically clears these preferences when the system keychain is updated.

     * The preferences are shared by all the WebViews that are created by the embedder application.

     *

     * @param onCleared  A runnable to be invoked when client certs are cleared.

     *                   The runnable will be called in UI thread.