Support setting mouse cursor icon in Android N.

chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java

Index: chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java b/chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java
index d4c3d6fbc30821989e553b2ff6db1812620240dd..b6a5546d1c2b73c259a608197306987aec0b9497 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/snackbar/SnackbarView.java
@@ -12,9 +12,11 @@ import android.app.Activity;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
+import android.os.Build;
 import android.support.annotation.Nullable;
 import android.view.Gravity;
 import android.view.LayoutInflater;
+import android.view.PointerIcon;
 import android.view.SurfaceView;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -93,6 +95,12 @@ class SnackbarView {
         mActionButtonView.setOnClickListener(listener);
         mProfileImageView = (ImageView) mView.findViewById(R.id.snackbar_profile_image);
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            PointerIcon icon =
+                    PointerIcon.getSystemIcon(mView.getContext(), PointerIcon.TYPE_ARROW);
+            mView.setPointerIcon(icon);
+        }
+
         updateInternal(snackbar, false);
     }