Support setting mouse cursor icon in Android N.

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabBottomBarDelegate.java

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.customtabs;
 
 import android.app.PendingIntent;
 import android.app.PendingIntent.CanceledException;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
 import android.support.customtabs.CustomTabsIntent;
+import android.view.PointerIcon;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnLayoutChangeListener;
 import android.view.ViewGroup;
 import android.view.ViewStub;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
 import android.widget.RemoteViews;
 
 import org.chromium.base.Log;
@@ skipping 126 matching lines @@
         return mBottomBarView.getChildAt(1).getHeight();
     }
 
     /**
      * Gets the {@link ViewGroup} of the bottom bar. If it has not been inflated, inflate it first.
      */
     private ViewGroup getBottomBarView() {
         if (mBottomBarView == null) {
             ViewStub bottomBarStub = ((ViewStub) mActivity.findViewById(R.id.bottombar_stub));
             mBottomBarView = (ViewGroup) bottomBarStub.inflate();
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                PointerIcon icon = PointerIcon.getSystemIcon(
+                        mBottomBarView.getContext(), PointerIcon.TYPE_ARROW);
+                mBottomBarView.setPointerIcon(icon);
+            }
         }
         return mBottomBarView;
     }
 
     private void hideBottomBar() {
         if (mBottomBarView == null) return;
         mBottomBarView.animate().alpha(0f).translationY(mBottomBarView.getHeight())
                 .setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE)
                 .setDuration(SLIDE_ANIMATION_DURATION_MS)
                 .withEndAction(new Runnable() {
@@ skipping 49 matching lines @@
     public void onBottomControlsHeightChanged(int bottomControlsHeight) {
         getBottomBarView().setTranslationY(mFullscreenManager.getBottomControlOffset());
     }
 
     @Override
     public void onContentOffsetChanged(float offset) { }
 
     @Override
     public void onToggleOverlayVideoMode(boolean enabled) { }
 }