Support setting mouse cursor icon in Android N.

chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarLayout.java

 // Copyright 2013 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.infobar;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.support.annotation.Nullable;
 import android.text.SpannableString;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
 import android.text.TextUtils;
 import android.util.TypedValue;
+import android.view.PointerIcon;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.widget.DualControlLayout;
@@ skipping 209 matching lines @@
         Button primaryButton = DualControlLayout.createButtonForLayout(
                 getContext(), true, primaryText, this);
 
         assert mButtonRowLayout == null;
         mButtonRowLayout = new DualControlLayout(getContext(), null);
         mButtonRowLayout.setAlignment(alignment);
         mButtonRowLayout.setStackedMargin(getResources().getDimensionPixelSize(
                 R.dimen.infobar_margin_between_stacked_buttons));
 
         mButtonRowLayout.addView(primaryButton);
-        if (secondaryView != null) mButtonRowLayout.addView(secondaryView);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {

[Jinsuk Kim, 2017/07/17 04:45:18]

Version check is repeated more often than necessary. I think the checking in
|setPointerIcon| is enough.

[jaebaek, 2017/07/18 07:48:21]

This is for PointerIcon.TYPE_HAND, but I will
move PointerIcon.TYPE_HAND to setPointerIcon()
method and change the name of method as
setPointerIconAsHand()

+            setPointerIcon(primaryButton, PointerIcon.TYPE_HAND);
+        }
+        if (secondaryView != null) {
+            mButtonRowLayout.addView(secondaryView);
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                setPointerIcon(secondaryView, PointerIcon.TYPE_HAND);
+            }
+        }
     }
 
     /**
      * Adjusts styling to account for the big icon layout.
      */
     public void setIsUsingBigIcon() {
         if (mIconView == null) return;
 
         LayoutParams lp = (LayoutParams) mIconView.getLayoutParams();
         lp.width = mBigIconSize;
@@ skipping 285 matching lines @@
         Drawable closeButtonBackground = a.getDrawable(0);
         a.recycle();
 
         ImageButton closeButton = new ImageButton(context);
         closeButton.setId(R.id.infobar_close_button);
         closeButton.setImageResource(R.drawable.btn_close);
         closeButton.setBackground(closeButtonBackground);
         closeButton.setContentDescription(context.getString(R.string.infobar_close));
         closeButton.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            setPointerIcon(closeButton, PointerIcon.TYPE_HAND);
+        }
+
         return closeButton;
     }
+
+    private static void setPointerIcon(View view, int type) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            PointerIcon icon = PointerIcon.getSystemIcon(view.getContext(), type);
+            view.setPointerIcon(icon);
+        }
+    }
 }