Update to newer Android Lint and suppress new Lint errors

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java
index 8d955f015334403a99462f92ddbf812ab6ed23ab..1a6d436747ea2beb4ed6893800bc06f1be887fa7 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivitySessionTracker.java
@@ -4,6 +4,7 @@
 
 package org.chromium.chrome.browser;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.Application;
 import android.content.SharedPreferences;
@@ -43,6 +44,8 @@ public class ChromeActivitySessionTracker {
 
     private static final String PREF_LOCALE = "locale";
 
+    // TODO(crbug.com/635567): Fix this properly.

[Ted C, 2017/04/27 19:02:47]

Again, this is a leaky singleton intentionally

So no fix should be needed here

[F, 2017/04/28 18:25:14]

Done.

+    @SuppressLint("StaticFieldLeak")
     private static ChromeActivitySessionTracker sInstance;
 
     private final PowerBroadcastReceiver mPowerBroadcastReceiver = new PowerBroadcastReceiver();