[Android] Upstream ChromeNativePreferences as PrefServiceBridge

chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java
new file mode 100644
index 0000000000000000000000000000000000000000..fc8b585ace11cc68813f9bc7729e81fc6181373a
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/NetworkPredictionOptions.java
@@ -0,0 +1,77 @@
+// Copyright 2014 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.preferences;
+
+import org.chromium.chrome.R;
+
+import java.util.Locale;
+
+/**
+ * Bandwidth options available based on network.
+ */
+public enum NetworkPredictionOptions {
+    NETWORK_PREDICTION_ALWAYS,
+    NETWORK_PREDICTION_WIFI_ONLY,
+    NETWORK_PREDICTION_NEVER;
+
+    public static final NetworkPredictionOptions DEFAULT = NETWORK_PREDICTION_WIFI_ONLY;
+
+    /**
+     * @return The number of choices offered for the user.
+     */
+    public static int choiceCount() {
+        return values().length;
+    }
+
+    /**
+     * Fetch the display title for the preference.
+     * @return resource for the title.
+     */
+    public int getDisplayTitle() {
+        switch(this) {
+            case NETWORK_PREDICTION_ALWAYS:
+                return R.string.always_prefetch_bandwidth_entry;
+            case NETWORK_PREDICTION_WIFI_ONLY :
+                return R.string.wifi_prefetch_bandwidth_entry;
+            case NETWORK_PREDICTION_NEVER:
+                return R.string.never_prefetch_bandwidth_entry;
+            default:
+                assert false;
+                return 0;
+        }
+    }
+
+    /**
+     * Convert an integer to enum NetworkPredictionOptions.
+     * @return NetworkPredictionOptions instance.
+     */
+    public static NetworkPredictionOptions intToEnum(int index) {
+        return NetworkPredictionOptions.values()[index];
+    }
+
+    /**
+     * Convert an enum NetworkPredictionOptions to integer.
+     * @return Integer corresponding to NetworkPredictionOptions instance.
+     */
+    public int enumToInt() {
+        return ordinal();
+    }
+
+    /**
+     * Convert an string to enum NetworkPredictionOptions.
+     * @return NetworkPredictionOptions instance.
+     */
+    public static NetworkPredictionOptions stringToEnum(String name) {
+        return valueOf(name.toUpperCase(Locale.US));
+    }
+
+    /**
+     * Convert an enum NetworkPredictionOptions to String.
+     * @return String corresponding to NetworkPredictionOptions instance.
+     */
+    public String enumToString() {
+        return name().toLowerCase(Locale.US);
+    }
+}