Support setting mouse cursor icon in Android N.

content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java

Index: content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java
diff --git a/content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java b/content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java
index 0e51e9d893b04fb4d382b038e74ed56bd5684c27..97ebef8f08c7bb3e9777cc25d4f36c4816bbd1ab 100644
--- a/content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java
+++ b/content/shell/android/java/src/org/chromium/content_shell/ShellViewAndroidDelegate.java
@@ -4,6 +4,8 @@
 
 package org.chromium.content_shell;
 
+import android.os.Build;
+import android.view.PointerIcon;
 import android.view.ViewGroup;
 
 import org.chromium.ui.base.ViewAndroidDelegate;
@@ -23,4 +25,11 @@ public class ShellViewAndroidDelegate 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);
+        }
+    }
 }