Comply with new addjavascriptinterface enforcement

Bug: 7073422

Use @JavascriptInterface annotation to comply with modifications
to addjavascriptinterface method.

Change-Id: I0b8e803dcbdf6e0471dbc7c59e6cc8d424780149
diff --git a/tests/tests/webkit/src/android/webkit/cts/WebViewTest.java b/tests/tests/webkit/src/android/webkit/cts/WebViewTest.java
index 3f7ea78..6c66f52 100755
--- a/tests/tests/webkit/src/android/webkit/cts/WebViewTest.java
+++ b/tests/tests/webkit/src/android/webkit/cts/WebViewTest.java
@@ -45,6 +45,7 @@
 import android.webkit.CacheManager.CacheResult;
 import android.webkit.ConsoleMessage;
 import android.webkit.DownloadListener;
+import android.webkit.JavascriptInterface;
 import android.webkit.SslErrorHandler;
 import android.webkit.WebBackForwardList;
 import android.webkit.WebChromeClient;
@@ -411,6 +412,7 @@
                 return mWasProvideResultCalled;
             }
 
+            @JavascriptInterface
             public synchronized void provideResult(String result) {
                 mWasProvideResultCalled = true;
                 mResult = result;
@@ -483,9 +485,12 @@
     public void testUseRemovedJavascriptInterface() throws Throwable {
         class RemovedObject {
             @Override
+            @JavascriptInterface
             public String toString() {
                 return "removedObject";
             }
+
+            @JavascriptInterface
             public void remove() throws Throwable {
                 mOnUiThread.removeJavascriptInterface("removedObject");
                 System.gc();
@@ -494,6 +499,8 @@
         class ResultObject {
             private String mResult;
             private boolean mIsResultAvailable;
+
+            @JavascriptInterface
             public synchronized void setResult(String result) {
                 mResult = result;
                 mIsResultAvailable = true;
@@ -1170,6 +1177,7 @@
         final class ImageLoaded {
             public boolean mImageLoaded;
 
+            @JavascriptInterface
             public void loaded() {
                 mImageLoaded = true;
             }
@@ -1769,6 +1777,8 @@
     public void testPauseResumeTimers() throws Throwable {
         class Monitor {
             private boolean mIsUpdated;
+
+            @JavascriptInterface
             public synchronized void update() {
                 mIsUpdated  = true;
                 notify();