ui: Cleanup class/struct forward declarations

ui/android/java/src/org/chromium/ui/picker/DateDialogNormalizer.java

Index: ui/android/java/src/org/chromium/ui/picker/DateDialogNormalizer.java
diff --git a/ui/android/java/src/org/chromium/ui/picker/DateDialogNormalizer.java b/ui/android/java/src/org/chromium/ui/picker/DateDialogNormalizer.java
deleted file mode 100644
index 2faa6d67d9a2764488ddbc3c897ed87f9a5f9a34..0000000000000000000000000000000000000000
--- a/ui/android/java/src/org/chromium/ui/picker/DateDialogNormalizer.java
+++ /dev/null
@@ -1,128 +0,0 @@
-// 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.ui.picker;
-
-import android.os.Build;
-import android.widget.DatePicker;
-import android.widget.DatePicker.OnDateChangedListener;
-
-import java.util.Calendar;
-import java.util.Date;
-import java.util.GregorianCalendar;
-import java.util.TimeZone;
-
-/**
- * Sets the current, min, and max values on the given DatePicker.
- */
-public class DateDialogNormalizer {
-
-    /**
-     * Stores a date (year-month-day) and the number of milliseconds corresponding to that date
-     * according to the DatePicker's calendar.
-     */
-    private static class DateAndMillis {
-        /**
-         * Number of milliseconds from the epoch (1970-01-01) to the beginning of year-month-day
-         * in the default time zone (TimeZone.getDefault()) using the Julian/Gregorian split
-         * calendar. This value is interopable with {@link DatePicker#getMinDate} and
-         * {@link DatePicker#setMinDate}.
-         */
-        public final long millisForPicker;
-
-        public final int year;
-        public final int month;  // 0-based
-        public final int day;
-
-        DateAndMillis(long millisForPicker, int year, int month, int day) {
-            this.millisForPicker = millisForPicker;
-            this.year = year;
-            this.month = month;
-            this.day = day;
-        }
-
-        static DateAndMillis create(long millisUtc) {
-            // millisUtc uses the Gregorian calendar only, so disable the Julian changeover date.
-            GregorianCalendar utcCal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
-            utcCal.setGregorianChange(new Date(Long.MIN_VALUE));
-            utcCal.setTimeInMillis(millisUtc);
-            int year = utcCal.get(Calendar.YEAR);
-            int month = utcCal.get(Calendar.MONTH);
-            int day = utcCal.get(Calendar.DAY_OF_MONTH);
-            return create(year, month, day);
-        }
-
-        static DateAndMillis create(int year, int month, int day) {
-            // By contrast, millisForPicker uses the default Gregorian/Julian changeover date.
-            Calendar defaultTimeZoneCal = Calendar.getInstance(TimeZone.getDefault());
-            defaultTimeZoneCal.clear();
-            defaultTimeZoneCal.set(year, month, day);
-            long millisForPicker = defaultTimeZoneCal.getTimeInMillis();
-            return new DateAndMillis(millisForPicker, year, month, day);
-        }
-    }
-
-    private static void setLimits(DatePicker picker, long currentMillisForPicker,
-            long minMillisForPicker, long maxMillisForPicker) {
-        // On Lollipop only (not KitKat or Marshmallow), DatePicker has terrible performance for
-        // large date ranges. This causes problems when the min or max date isn't set in HTML, in
-        // which case these values default to the min and max possible values for the JavaScript
-        // Date object (1CE and 275760CE). As a workaround, limit the date range to 5000 years
-        // before and after the current date. In practice, this doesn't limit users since scrolling
-        // through 5000 years in the DatePicker is highly impractical anyway. See
-        // http://crbug.com/441060
-        if (Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP
-                || Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP_MR1) {
-            final long maxRangeMillis = 5000L * 365 * 24 * 60 * 60 * 1000;
-            minMillisForPicker = Math.max(minMillisForPicker,
-                    currentMillisForPicker - maxRangeMillis);
-            maxMillisForPicker = Math.min(maxMillisForPicker,
-                    currentMillisForPicker + maxRangeMillis);
-        }
-
-        // On KitKat and earlier, DatePicker requires the minDate is always less than maxDate, even
-        // during the process of setting those values (eek), so set them in an order that preserves
-        // this invariant throughout.
-        if (minMillisForPicker > picker.getMaxDate()) {
-            picker.setMaxDate(maxMillisForPicker);
-            picker.setMinDate(minMillisForPicker);
-        } else {
-            picker.setMinDate(minMillisForPicker);
-            picker.setMaxDate(maxMillisForPicker);
-        }
-    }
-
-    /**
-     * Sets the current, min, and max values on the given DatePicker and ensures that
-     * min <= current <= max, adjusting current and max if needed.
-     *
-     * @param year The current year to set.
-     * @param month The current month to set. 0-based.
-     * @param day The current day to set.
-     * @param minMillisUtc The minimum allowed date, in milliseconds from the epoch according to a
-     *                     proleptic Gregorian calendar (no Julian switch).
-     * @param maxMillisUtc The maximum allowed date, in milliseconds from the epoch according to a
-     *                     proleptic Gregorian calendar (no Julian switch).
-     */
-    public static void normalize(DatePicker picker, final OnDateChangedListener listener,
-            int year, int month, int day, long minMillisUtc, long maxMillisUtc) {
-        DateAndMillis currentDate = DateAndMillis.create(year, month, day);
-        DateAndMillis minDate = DateAndMillis.create(minMillisUtc);
-        DateAndMillis maxDate = DateAndMillis.create(maxMillisUtc);
-
-        // Ensure min <= current <= max, adjusting current and max if needed.
-        if (maxDate.millisForPicker < minDate.millisForPicker) {
-            maxDate = minDate;
-        }
-        if (currentDate.millisForPicker < minDate.millisForPicker) {
-            currentDate = minDate;
-        } else if (currentDate.millisForPicker > maxDate.millisForPicker) {
-            currentDate = maxDate;
-        }
-
-        setLimits(picker, currentDate.millisForPicker, minDate.millisForPicker,
-                maxDate.millisForPicker);
-        picker.init(currentDate.year, currentDate.month, currentDate.day, listener);
-    }
-}