Fix HandlerLeak lint warning

android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java

Index: android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
diff --git a/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java b/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
index 1d28526a597de73ef6dfc7c835b0da7b1f81f555..a2b6aa8e10b6fe6aacb1b72b55238ec23f0b86fe 100644
--- a/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
+++ b/android_webview/glue/java/src/com/android/webview/chromium/WebViewContentsClientAdapter.java
@@ -4,6 +4,7 @@
 
 package com.android.webview.chromium;
 
+import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.graphics.Bitmap;
@@ -110,11 +111,13 @@ public class WebViewContentsClientAdapter extends AwContentsClient {
 
     private WeakHashMap<AwPermissionRequest, WeakReference<PermissionRequestAdapter>>
             mOngoingPermissionRequests;
+
     /**
      * Adapter constructor.
      *
      * @param webView the {@link WebView} instance that this adapter is serving.
      */
+    @SuppressLint("HandlerLeak")
     WebViewContentsClientAdapter(WebView webView, Context context,
             WebViewDelegate webViewDelegate) {
         if (webView == null || webViewDelegate == null) {