Add a time period dropdown to the CBD dialog on Android.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
index 57f9facd6d5669be09f4f09334c19a33949c7357..60cb913137f188b09b56f9e582437c4bb4d9965d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
@@ -659,6 +659,24 @@ public final class PrefServiceBridge {
     }
 
     /**
+     * Gets the time period for which browsing data will be deleted.
+     * @return The currently selected browsing data deletion time period (from the shared enum
+     *      {@link org.chromium.chrome.browser.TimePeriod}).
+     */
+    public int getBrowsingDataDeletionTimePeriod() {
+        return nativeGetBrowsingDataDeletionTimePeriod();
+    }
+
+    /**
+     * Sets the time period for which browsing data will be deleted.
+     * @param timePeriod The selected browsing data deletion time period (from the shared enum
+     *      {@link org.chromium.chrome.browser.TimePeriod}).
+     */
+    public void setBrowsingDataDeletionTimePeriod(int timePeriod) {
+        nativeSetBrowsingDataDeletionTimePeriod(timePeriod);
+    }
+
+    /**
      * Clear the specified types of browsing data asynchronously.
      * |listener| is an object to be notified when clearing completes.
      * It can be null, but many operations (e.g. navigation) are
@@ -1000,6 +1018,8 @@ public final class PrefServiceBridge {
     private native void nativeSetJavaScriptAllowed(String pattern, int setting);
     private native boolean nativeGetBrowsingDataDeletionPreference(int dataType);
     private native void nativeSetBrowsingDataDeletionPreference(int dataType, boolean value);
+    private native int nativeGetBrowsingDataDeletionTimePeriod();
+    private native void nativeSetBrowsingDataDeletionTimePeriod(int timePeriod);
     private native void nativeClearBrowsingData(int[] dataTypes);
     private native boolean nativeCanDeleteBrowsingHistory();
     private native void nativeSetAllowCookiesEnabled(boolean allow);