[Android] Incorporate findbugs into android builds.

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.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.content.Context;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
@@ skipping 28 matching lines @@
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.webkit.WebViewProvider;
 import android.widget.TextView;
 
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.AwContentsStatics;
 import org.chromium.android_webview.AwPrintDocumentAdapter;
 import org.chromium.android_webview.AwSettings;
 import org.chromium.base.ThreadUtils;
+import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.content.browser.SmartClipProvider;
 
 import java.io.BufferedWriter;
 import java.io.File;
 import java.util.Map;
 import java.util.Queue;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.FutureTask;
 import java.util.concurrent.TimeUnit;
@@ skipping 1075 matching lines @@
                 @Override
                 public void run() {
                     findAllAsync(searchString);
                 }
             });
             return;
         }
         mAwContents.findAllAsync(searchString);
     }
 
+    @SuppressFBWarnings("RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE")
     @Override
     public boolean showFindDialog(final String text, final boolean showIme) {
         mFactory.startYourEngines(false);
         if (checkNeedsPost()) {
             return false;
         }
         if (mWebView.getParent() == null) {
             return false;
         }
 
@@ skipping 997 matching lines @@
         mAwContents.extractSmartClipData(x, y, width, height);
     }
 
     // Implements SmartClipProvider
     @Override
     public void setSmartClipResultHandler(final Handler resultHandler) {
         checkThread();
         mAwContents.setSmartClipResultHandler(resultHandler);
     }
 }