[Android] Incorporate findbugs into android builds.

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java

 // Copyright 2012 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.android_webview.test;
 
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
 import android.test.UiThreadTest;
 import android.test.suitebuilder.annotation.LargeTest;
 import android.test.suitebuilder.annotation.SmallTest;
 import android.util.Pair;
 import android.view.KeyEvent;
 import android.view.View;
 import android.webkit.JavascriptInterface;
 
 import org.apache.http.Header;
 import org.apache.http.HttpRequest;
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.AwSettings;
 import org.chromium.android_webview.test.TestAwContentsClient.OnDownloadStartHelper;
 import org.chromium.android_webview.test.util.CommonResources;
+import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.content.browser.test.util.CallbackHelper;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.net.test.util.TestWebServer;
 
 import java.io.InputStream;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ skipping 423 matching lines @@
         int currentCallCount = onPageFinishedHelper.getCallCount();
         loadUrlAsync(awContents,
                 "file:///file-that-does-not-exist#<script>window.failed = true;</script>");
         onPageFinishedHelper.waitForCallback(currentCallCount, 1, WAIT_TIMEOUT_MS,
                                              TimeUnit.MILLISECONDS);
 
         assertEquals("false", executeJavaScriptAndWaitForResult(awContents, mContentsClient,
                 script));
     }
 
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
     @Feature({"AndroidWebView"})
     @SmallTest
     public void testCanInjectHeaders() throws Throwable {
         final AwTestContainerView testContainer =
                 createAwTestContainerViewOnMainSync(mContentsClient);
         final AwContents awContents = testContainer.getAwContents();
 
         TestWebServer webServer = TestWebServer.start();
         try {
             final String pagePath = "/test_can_inject_headers.html";
@@ skipping 95 matching lines @@
         AwContents awContents = testView.getAwContents();
 
         String script = "window.Notification || window.PushManager";
 
         enableJavaScriptOnUiThread(awContents);
         loadUrlSync(awContents, mContentsClient.getOnPageFinishedHelper(), "about:blank");
         assertEquals("null", executeJavaScriptAndWaitForResult(awContents, mContentsClient,
                 script));
     }
 }