[Android] Incorporate findbugs into android builds.

android_webview/glue/java/src/com/android/webview/chromium/WebHistoryItemChromium.java

 // Copyright 2014 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 com.android.webview.chromium;
 
 import android.graphics.Bitmap;
 import android.webkit.WebHistoryItem;
 
+import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.content_public.browser.NavigationEntry;
 
 /**
  * WebView Chromium implementation of WebHistoryItem. Simple immutable wrapper
  * around NavigationEntry
  */
 @SuppressWarnings("deprecation")
 public class WebHistoryItemChromium extends WebHistoryItem {
     private final String mUrl;
     private final String mOriginalUrl;
@@ skipping 52 matching lines @@
     private WebHistoryItemChromium(String url, String originalUrl, String title, Bitmap favicon) {
         mUrl = url;
         mOriginalUrl = originalUrl;
         mTitle = title;
         mFavicon = favicon;
     }
 
     /**
      * See {@link android.webkit.WebHistoryItem#clone}.
      */
+    @SuppressFBWarnings({
+            "CHROMIUM_SYNCHRONIZED_METHOD",
+            "CN_IDIOM_NO_SUPER_CALL"})
     @Override
     public synchronized WebHistoryItemChromium clone() {
         return new WebHistoryItemChromium(mUrl, mOriginalUrl, mTitle, mFavicon);
     }
 }