Update to newer Android Lint and suppress new Lint errors

content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.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.content.browser;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 
 import org.chromium.base.CpuFeatures;
 import org.chromium.base.Log;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
 import org.chromium.base.VisibleForTesting;
@@ skipping 166 matching lines @@
     private static Map<Integer, BaseChildProcessConnection> sServiceMap =
             new ConcurrentHashMap<Integer, BaseChildProcessConnection>();
 
     // These variables are used for the warm up sandboxed connection.
     // |sSpareSandboxedConnection| is non-null when there is a pending connection. Note it's cleared
     // to null again after the connection is used for a real child process.
     // |sSpareConnectionStarting| is true if ChildProcessConnection.StartCallback has not fired.
     // This is used for a child process allocation to determine if StartCallback should be chained.
     // |sSpareConnectionStartCallback| is the chained StartCallback. This is also used to determine
     // if there is already a child process launch that's used this this connection.
+    @SuppressLint("StaticFieldLeak")
     private static BaseChildProcessConnection sSpareSandboxedConnection;
     private static boolean sSpareConnectionStarting;
     private static BaseChildProcessConnection.StartCallback sSpareConnectionStartCallback;
 
     // Manages oom bindings used to bind chind services. Lazily initialized by getBindingManager()
     private static BindingManager sBindingManager;
 
     // Whether the main application is currently brought to the foreground.
     private static boolean sApplicationInForeground = true;
 
@@ skipping 348 matching lines @@
 
         try {
             ((ManagedChildProcessConnection) sServiceMap.get(pid)).crashServiceForTesting();
         } catch (RemoteException ex) {
             return false;
         }
 
         return true;
     }
 }