Support setting mouse cursor icon in Android N.

ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java

Index: ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
diff --git a/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java b/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
index d99f612d6b2770436574b97a96f73aef32a66a33..d2b0a513d99d7155caf41d1c44bff2b070144668 100644
--- a/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
+++ b/ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java
@@ -8,6 +8,7 @@ import android.annotation.TargetApi;
 import android.content.ClipData;
 import android.graphics.Bitmap;
 import android.os.Build;
+import android.view.PointerIcon;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout.LayoutParams;
@@ -16,6 +17,7 @@ import android.widget.ImageView;
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
+import org.chromium.blink_public.web.WebCursorInfoType;
 
 /**
  * Class to acquire, position, and remove anchor views from the implementing View.
@@ -99,6 +101,115 @@ public abstract class ViewAndroidDelegate {
                 new View.DragShadowBuilder(imageView), null, View.DRAG_FLAG_GLOBAL);
     }
 
+    @CalledByNative
+    private void onCursorChangedToCustom(Bitmap customCursorBitmap, int hotspotX, int hotspotY) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            getContainerView().getRootView().setPointerIcon(
+                    PointerIcon.create(customCursorBitmap, hotspotX, hotspotY));
+        }
+    }
+
+    @CalledByNative
+    public void onCursorChanged(int cursorType) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;
+
+        int pointerIconType;
+        switch (cursorType) {
+            case WebCursorInfoType.TYPE_NONE:
+                pointerIconType = PointerIcon.TYPE_NULL;
+                break;
+            case WebCursorInfoType.TYPE_POINTER:
+                pointerIconType = PointerIcon.TYPE_ARROW;
+                break;
+            case WebCursorInfoType.TYPE_CONTEXT_MENU:
+                pointerIconType = PointerIcon.TYPE_CONTEXT_MENU;
+                break;
+            case WebCursorInfoType.TYPE_HAND:
+                pointerIconType = PointerIcon.TYPE_HAND;
+                break;
+            case WebCursorInfoType.TYPE_HELP:
+                pointerIconType = PointerIcon.TYPE_HELP;
+                break;
+            case WebCursorInfoType.TYPE_WAIT:
+                pointerIconType = PointerIcon.TYPE_WAIT;
+                break;
+            case WebCursorInfoType.TYPE_CELL:
+                pointerIconType = PointerIcon.TYPE_CELL;
+                break;
+            case WebCursorInfoType.TYPE_CROSS:
+                pointerIconType = PointerIcon.TYPE_CROSSHAIR;
+                break;
+            case WebCursorInfoType.TYPE_I_BEAM:
+                pointerIconType = PointerIcon.TYPE_TEXT;
+                break;
+            case WebCursorInfoType.TYPE_VERTICAL_TEXT:
+                pointerIconType = PointerIcon.TYPE_VERTICAL_TEXT;
+                break;
+            case WebCursorInfoType.TYPE_ALIAS:
+                pointerIconType = PointerIcon.TYPE_ALIAS;
+                break;
+            case WebCursorInfoType.TYPE_COPY:
+                pointerIconType = PointerIcon.TYPE_COPY;
+                break;
+            case WebCursorInfoType.TYPE_NO_DROP:
+                pointerIconType = PointerIcon.TYPE_NO_DROP;
+                break;
+            case WebCursorInfoType.TYPE_EAST_WEST_RESIZE:
+            case WebCursorInfoType.TYPE_COLUMN_RESIZE:
+                pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
+                break;
+            case WebCursorInfoType.TYPE_NORTH_SOUTH_RESIZE:
+            case WebCursorInfoType.TYPE_ROW_RESIZE:
+                pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
+                break;
+            case WebCursorInfoType.TYPE_NORTH_EAST_SOUTH_WEST_RESIZE:
+                pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
+                break;
+            case WebCursorInfoType.TYPE_NORTH_WEST_SOUTH_EAST_RESIZE:
+                pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
+                break;
+            case WebCursorInfoType.TYPE_ZOOM_IN:
+                pointerIconType = PointerIcon.TYPE_ZOOM_IN;
+                break;
+            case WebCursorInfoType.TYPE_ZOOM_OUT:
+                pointerIconType = PointerIcon.TYPE_ZOOM_OUT;
+                break;
+            case WebCursorInfoType.TYPE_GRAB:
+                pointerIconType = PointerIcon.TYPE_GRAB;
+                break;
+            case WebCursorInfoType.TYPE_GRABBING:
+                pointerIconType = PointerIcon.TYPE_GRABBING;
+                break;
+            case WebCursorInfoType.TYPE_EAST_RESIZE:

[Jinsuk Kim, 2017/05/18 02:19:51]

default: will be enough. No need to have other cases.

[aelias_OOO_until_Jul13, 2017/05/18 18:57:34]

I would prefer the reverse, please remove "default:" and keep the other cases. 
Then it's clearer which ones are missing, and if a new WebCursorType is added,
it will force the author to look here and see if it maps to anything.

[jaebaek, 2017/05/22 12:08:34]

This is for letting others know all enums specified in the header file.
This was a comment from aelias@

+            case WebCursorInfoType.TYPE_NORTH_RESIZE:
+            case WebCursorInfoType.TYPE_NORTH_EAST_RESIZE:
+            case WebCursorInfoType.TYPE_NORTH_WEST_RESIZE:
+            case WebCursorInfoType.TYPE_SOUTH_RESIZE:
+            case WebCursorInfoType.TYPE_SOUTH_EAST_RESIZE:
+            case WebCursorInfoType.TYPE_SOUTH_WEST_RESIZE:
+            case WebCursorInfoType.TYPE_WEST_RESIZE:
+            case WebCursorInfoType.TYPE_MIDDLE_PANNING:
+            case WebCursorInfoType.TYPE_EAST_PANNING:
+            case WebCursorInfoType.TYPE_NORTH_PANNING:
+            case WebCursorInfoType.TYPE_NORTH_EAST_PANNING:
+            case WebCursorInfoType.TYPE_NORTH_WEST_PANNING:
+            case WebCursorInfoType.TYPE_SOUTH_PANNING:
+            case WebCursorInfoType.TYPE_SOUTH_EAST_PANNING:
+            case WebCursorInfoType.TYPE_SOUTH_WEST_PANNING:
+            case WebCursorInfoType.TYPE_WEST_PANNING:
+            case WebCursorInfoType.TYPE_MOVE:
+            case WebCursorInfoType.TYPE_PROGRESS:
+            case WebCursorInfoType.TYPE_NOT_ALLOWED:
+            case WebCursorInfoType.TYPE_CUSTOM:
+            default:
+                pointerIconType = PointerIcon.TYPE_ARROW;
+                break;
+        }
+        ViewGroup containerView = getContainerView();
+        containerView.getRootView().setPointerIcon(
+                PointerIcon.getSystemIcon(containerView.getContext(), pointerIconType));
+    }
+
     /**
      * Called whenever the background color of the page changes as notified by Blink.
      * @param color The new ARGB color of the page background.