Update to newer Android Lint and suppress new Lint errors

chrome/android/java/src/org/chromium/chrome/browser/signin/SigninManager.java

 // Copyright 2013 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.chrome.browser.signin;
 
 import android.accounts.Account;
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.Context;
 import android.os.Handler;
 
 import org.chromium.base.ActivityState;
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.Callback;
 import org.chromium.base.Log;
 import org.chromium.base.ObserverList;
@@ skipping 18 matching lines @@
  * This class handles common paths during the sign-in and sign-out flows.
  * <p/>
  * Only usable from the UI thread as the native SigninManager requires its access to be in the
  * UI thread.
  * <p/>
  * See chrome/browser/signin/signin_manager_android.h for more details.
  */
 public class SigninManager implements AccountTrackerService.OnSystemAccountsSeededListener {
     private static final String TAG = "SigninManager";
 
+    @SuppressLint("StaticFieldLeak")
     private static SigninManager sSigninManager;
     private static int sSignInAccessPoint = SigninAccessPoint.UNKNOWN;
 
     private final Context mContext;
     private final long mNativeSigninManagerAndroid;
 
     /** Tracks whether the First Run check has been completed.
      *
      * A new sign-in can not be started while this is pending, to prevent the
      * pending check from eventually starting a 2nd sign-in.
@@ skipping 620 matching lines @@
     private native void nativeOnSignInCompleted(long nativeSigninManagerAndroid, String username);
     private native void nativeSignOut(long nativeSigninManagerAndroid);
     private native String nativeGetManagementDomain(long nativeSigninManagerAndroid);
     private native void nativeWipeProfileData(long nativeSigninManagerAndroid, WipeDataHooks hooks);
     private native void nativeClearLastSignedInUser(long nativeSigninManagerAndroid);
     private native void nativeLogInSignedInUser(long nativeSigninManagerAndroid);
     private native boolean nativeIsSignedInOnNative(long nativeSigninManagerAndroid);
     private native void nativeProhibitSignout(
             long nativeSigninManagerAndroid, boolean prohibitSignout);
 }