Support setting mouse cursor icon in Android N.

android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java

Index: android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java b/android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java
index ccf38aba63a24667ca21d16a9fc90e5f902ab956..ea6eba3dcaf2804601e53452906ecf5fecd2e4e9 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwViewAndroidDelegate.java
@@ -4,6 +4,8 @@
 
 package org.chromium.android_webview;
 
+import android.os.Build;
+import android.view.PointerIcon;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
@@ -151,4 +153,11 @@ public class AwViewAndroidDelegate extends ViewAndroidDelegate {
     public ViewGroup getContainerView() {
         return mContainerView;
     }
+
+    @Override
+    public void updatePointerIcon(PointerIcon icon) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            getContainerView().setPointerIcon(icon);
+        }
+    }
 }