[remoting android] Fix WebView deprecation warnings

remoting/android/java/src/org/chromium/chromoting/help/CreditsActivity.java

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting.help;
 
+import android.annotation.TargetApi;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.MenuItem;
+import android.webkit.WebResourceRequest;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
 import org.chromium.chromoting.ChromotingUtil;
 import org.chromium.chromoting.R;
 
 /**
  * The Activity for showing the Credits screen.
  */
 public class CreditsActivity extends AppCompatActivity {
     private static final String CREDITS_URL = "file:///android_res/raw/credits.html";
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         setContentView(R.layout.credits);
         WebView webView = (WebView) findViewById(R.id.web_view);
 
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         setSupportActionBar(toolbar);
 
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setTitle(getString(R.string.actionbar_help_title));
 
         webView.getSettings().setJavaScriptEnabled(true);
         webView.setWebViewClient(new WebViewClient() {
+            private boolean shouldOverrideUrlLoading(final Uri uri) {
+                // There are no internal links in the Credits page, so open any links in a
+                // Web browser.
+                ChromotingUtil.openUrl(CreditsActivity.this, uri);
+                return true;
+            }
+
+            @TargetApi(Build.VERSION_CODES.N)
+            @Override
+            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
+                return shouldOverrideUrlLoading(request.getUrl());
+            }
+
+            @SuppressWarnings("deprecation")
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, String url) {
-                // There are no internal links in the Credits page, so open any links in a
-                // Web browser.
-                ChromotingUtil.openUrl(CreditsActivity.this, Uri.parse(url));
-                return true;
+                return shouldOverrideUrlLoading(Uri.parse(url));
             }
         });
         webView.loadUrl(CREDITS_URL);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
         if (id == android.R.id.home) {
             finish();
             return true;
         }
         return super.onOptionsItemSelected(item);
     }
 }