Update to newer Android Lint and suppress new Lint errors

net/android/java/src/org/chromium/net/NetworkChangeNotifier.java

Index: net/android/java/src/org/chromium/net/NetworkChangeNotifier.java
diff --git a/net/android/java/src/org/chromium/net/NetworkChangeNotifier.java b/net/android/java/src/org/chromium/net/NetworkChangeNotifier.java
index 2d0fe8d6ed246d6910ac1cd31317854db462d1ee..6549e0210f73d7a11cfc54d7fd1aa5d23ea47b45 100644
--- a/net/android/java/src/org/chromium/net/NetworkChangeNotifier.java
+++ b/net/android/java/src/org/chromium/net/NetworkChangeNotifier.java
@@ -4,6 +4,7 @@
 
 package org.chromium.net;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 
 import org.chromium.base.ObserverList;
@@ -41,6 +42,7 @@ public class NetworkChangeNotifier {
     private double mCurrentMaxBandwidth = Double.POSITIVE_INFINITY;
     private int mMaxBandwidthConnectionType = mCurrentConnectionType;
 
+    @SuppressLint("StaticFieldLeak")
     private static NetworkChangeNotifier sInstance;
 
     @VisibleForTesting