Java wrapper for DistilledPagePrefs.

chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerServiceFactory.java

Index: chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerServiceFactory.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerServiceFactory.java b/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerServiceFactory.java
new file mode 100644
index 0000000000000000000000000000000000000000..8a080babc30d8ee6f18f98c200dae4ffcd208161
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/dom_distiller/DomDistillerServiceFactory.java
@@ -0,0 +1,38 @@
+// 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.dom_distiller;
+
+import org.chromium.base.JNINamespace;
+import org.chromium.base.ThreadUtils;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.components.dom_distiller.core.DomDistillerService;
+
+import java.util.HashMap;
+
+/**
+ * DomDistillerServiceFactory maps Profiles to DomDistillerServices.

[nyquist, 2014/07/09 23:49:03]

Nit: Maybe "to {@link DomDistillerService} instances."?

Maybe also add something like: "Each {@link Profile} will at most have one
instance of the service. If the service does not already exist, it will be
created on the first access."

[sunangel, 2014/07/10 14:31:52]

Done.

+ */
+@JNINamespace("dom_distiller::android")
+public class DomDistillerServiceFactory {
+
+    private static final HashMap<Profile, DomDistillerService> sServiceMap =
+        new HashMap<Profile, DomDistillerService>();
+
+    /**
+     * Returns Java DomDistillerService for given Profile.
+     */
+    public static DomDistillerService getForProfile(
+        Profile profile) {
+        ThreadUtils.assertOnUiThread();
+        DomDistillerService service = sServiceMap.get(profile);
+        if (service == null) {
+            service = (DomDistillerService) nativeGetForProfile(profile);
+            sServiceMap.put(profile, service);
+        }
+        return service;
+    }
+
+    private static native DomDistillerService nativeGetForProfile(Profile profile);
+}