Address HandlerLeak lint warnings.

chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java
index fcbe1c0562e5bca573a81a4f209d0d449eb721be..b478ebdb9fdc4b1854b02f545dcc8d70858f437b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/overlays/strip/StripLayoutHelper.java
@@ -6,6 +6,7 @@ package org.chromium.chrome.browser.compositor.overlays.strip;
 
 import static org.chromium.chrome.browser.compositor.layouts.ChromeAnimation.AnimatableAnimation.createAnimation;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.res.Resources;
 import android.os.Handler;
@@ -217,6 +218,13 @@ public class StripLayoutHelper {
     }
 
     /**
+     * Cleans up internal state.
+     */
+    public void destroy() {
+        mStripTabEventHandler.removeCallbacksAndMessages(null);
+    }
+
+    /**
      * Get a list of virtual views for accessibility.
      *
      * @param views A List to populate with virtual views.
@@ -1506,6 +1514,7 @@ public class StripLayoutHelper {
         }
     }
 
+    @SuppressLint("HandlerLeak")
     private class StripTabEventHandler extends Handler {
         @Override
         public void handleMessage(Message m) {