diff --git a/build/android/findbugs_filter/findbugs_known_bugs.txt b/build/android/findbugs_filter/findbugs_known_bugs.txt
index a589e7c09fc09..d14dfabe51415 100644
--- a/build/android/findbugs_filter/findbugs_known_bugs.txt
+++ b/build/android/findbugs_filter/findbugs_known_bugs.txt
@@ -109,8 +109,6 @@ M P SIC: Should org.chromium.content.browser.JavaBridgeReturnValuesTest$CustomTy
 M P SIC: Should org.chromium.content.browser.PopupZoomerTest$CustomCanvasPopupZoomer be a _static_ inner class?  At PopupZoomerTest.java
 M P SS: Unread field: org.chromium.android_webview.test.util.ImagePageGenerator.IMAGE_PREFIX; should this field be static?  At ImagePageGenerator.java
 M P SS: Unread field: org.chromium.android_webview.test.util.ImagePageGenerator.IMAGE_SUFFIX; should this field be static?  At ImagePageGenerator.java
-M P SS: Unread field: org.chromium.native_test.ChromeNativeTestActivity.EXTRA_RUN_IN_SUB_THREAD; should this field be static?  At ChromeNativeTestActivity.java
-M P SS: Unread field: org.chromium.native_test.ChromeNativeTestActivity.TAG; should this field be static?  At ChromeNativeTestActivity.java
 M P UrF: Unread field: org.chromium.content.browser.ContentViewGestureHandlerTest$MockListener.mLastFling2  At ContentViewGestureHandlerTest.java
 M P UrF: Unread field: org.chromium.content.browser.ContentViewGestureHandlerTest$MockListener.mLastScroll1  At ContentViewGestureHandlerTest.java
 M P UrF: Unread field: org.chromium.content.browser.ContentViewGestureHandlerTest$MockListener.mLastScroll2  At ContentViewGestureHandlerTest.java
diff --git a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
index fef3dce57cce8..490ed1419a15e 100644
--- a/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
+++ b/testing/android/java/src/org/chromium/native_test/ChromeNativeTestActivity.java
@@ -21,10 +21,10 @@ import java.io.File;
 // Our tests need to go up to our own java classes, which is not possible using
 // the native activity class loader.
 public class ChromeNativeTestActivity extends ChromiumActivity {
-    private final String TAG = "ChromeNativeTestActivity";
-    private final String EXTRA_RUN_IN_SUB_THREAD = "RunInSubThread";
+    private static final String TAG = "ChromeNativeTestActivity";
+    private static final String EXTRA_RUN_IN_SUB_THREAD = "RunInSubThread";
     // We post a delayed task to run tests so that we do not block onCreate().
-    private static long RUN_TESTS_DELAY_IN_MS = 300;
+    private static final long RUN_TESTS_DELAY_IN_MS = 300;
 
     // Name of our shlib as obtained from a string resource.
     private String mLibrary;