[Payment] should show all accepted card icon in payment editor.

chrome/android/java/src/org/chromium/chrome/browser/widget/DynamicHeightGridView.java

+// Copyright 2017 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.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.GridView;
+
+/**
+ * This class is customized GridView.

[gogerald1, 2017/05/24 14:25:23]

it may be clear and simpler to say "This class is a customized GridView which
draws items in multiple lines automatically"

[Hwanseung Lee, 2017/05/26 15:42:40]

Done.

+ * if can't draw items in one line, it will make more than two lines automatically.
+ */
+public class DynamicHeightGridView extends GridView {
+    public DynamicHeightGridView(Context context, AttributeSet attrs) {

[gogerald1, 2017/05/24 14:25:23]

looks only this constructor is needed, comment it like here
https://cs.chromium.org/chromium/src/chrome/android/java/src/org/chromium/chr...

[Hwanseung Lee, 2017/05/26 15:42:40]

Done.

+        super(context, attrs);
+    }
+    public DynamicHeightGridView(Context context) {
+        super(context);
+    }
+    public DynamicHeightGridView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+    @Override

[gogerald1, 2017/05/24 14:25:23]

space line above,

[Hwanseung Lee, 2017/05/26 15:42:40]

Done.

+    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int expandSpec =

[gogerald1, 2017/05/24 14:25:24]

do we really need this customization since we already set height to
wrap_content?

[Hwanseung Lee, 2017/05/26 15:42:40]

it is not working in scrollview, so this class needs.
refer to below link, there is detail information. 
https://stackoverflow.com/questions/4523609/grid-of-images-inside-scrollview/...

+                View.MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, View.MeasureSpec.AT_MOST);
+        super.onMeasure(widthMeasureSpec, expandSpec);
+    }
+}