[Android] Move the java content/ package to content_public/ to start the split.

content/public/android/java/src/org/chromium/content/common/CleanupReference.java

Index: content/public/android/java/src/org/chromium/content/common/CleanupReference.java
diff --git a/content/public/android/java/src/org/chromium/content/common/CleanupReference.java b/content/public/android/java/src/org/chromium/content/common/CleanupReference.java
deleted file mode 100644
index 6921e0d8cd24a854231f10ff31bf4669c93d9bd9..0000000000000000000000000000000000000000
--- a/content/public/android/java/src/org/chromium/content/common/CleanupReference.java
+++ /dev/null
@@ -1,165 +0,0 @@
-// Copyright 2012 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.content.common;
-
-import android.os.Handler;
-import android.os.Looper;
-import android.os.Message;
-import android.util.Log;
-
-import org.chromium.base.ThreadUtils;
-import org.chromium.base.TraceEvent;
-
-import java.lang.ref.ReferenceQueue;
-import java.lang.ref.WeakReference;
-import java.util.HashSet;
-import java.util.Set;
-
-/**
- * Handles running cleanup tasks when an object becomes eligible for GC. Cleanup tasks
- * are always executed on the main thread. In general, classes should not have
- * finalizers and likewise should not use this class for the same reasons. The
- * exception is where public APIs exist that require native side resources to be
- * cleaned up in response to java side GC of API objects. (Private/internal
- * interfaces should always favor explicit resource releases / destroy()
- * protocol for this rather than depend on GC to trigger native cleanup).
- * NOTE this uses WeakReference rather than PhantomReference, to avoid delaying the
- * cleanup processing until after finalizers (if any) have run. In general usage of
- * this class indicates the client does NOT use finalizers anyway (Good), so this should
- * not be a visible difference in practice.
- */
-public class CleanupReference extends WeakReference<Object> {
-    private static final String TAG = "CleanupReference";
-
-    private static final boolean DEBUG = false;  // Always check in as false!
-
-    // The VM will enqueue CleanupReference instance onto sGcQueue when it becomes eligible for
-    // garbage collection (i.e. when all references to the underlying object are nullified).
-    // |sReaperThread| processes this queue by forwarding the references on to the UI thread
-    // (via REMOVE_REF message) to perform cleanup.
-    private static ReferenceQueue<Object> sGcQueue = new ReferenceQueue<Object>();
-    private static Object sCleanupMonitor = new Object();
-
-    private static final Thread sReaperThread = new Thread(TAG) {
-        @Override
-        public void run() {
-            while (true) {
-                try {
-                    CleanupReference ref = (CleanupReference) sGcQueue.remove();
-                    if (DEBUG) Log.d(TAG, "removed one ref from GC queue");
-                    synchronized (sCleanupMonitor) {
-                        Message.obtain(LazyHolder.sHandler, REMOVE_REF, ref).sendToTarget();
-                        // Give the UI thread chance to run cleanup before looping around and
-                        // taking the next item from the queue, to avoid Message bombing it.
-                        sCleanupMonitor.wait(500);
-                    }
-                } catch (Exception e) {
-                    Log.e(TAG, "Queue remove exception:", e);
-                }
-            }
-        }
-    };
-
-    static {
-        sReaperThread.setDaemon(true);
-        sReaperThread.start();
-    }
-
-    // Message's sent in the |what| field to |sHandler|.
-
-    // Add a new reference to sRefs. |msg.obj| is the CleanupReference to add.
-    private static final int ADD_REF = 1;
-    // Remove reference from sRefs. |msg.obj| is the CleanupReference to remove.
-    private static final int REMOVE_REF = 2;
-
-    /**
-     * This {@link Handler} polls {@link #sRefs}, looking for cleanup tasks that
-     * are ready to run.
-     * This is lazily initialized as ThreadUtils.getUiThreadLooper() may not be
-     * set yet early in startup.
-     */
-    private static class LazyHolder {
-        static final Handler sHandler = new Handler(ThreadUtils.getUiThreadLooper()) {
-            @Override
-            public void handleMessage(Message msg) {
-                TraceEvent.begin();
-                CleanupReference ref = (CleanupReference) msg.obj;
-                switch (msg.what) {
-                    case ADD_REF:
-                        sRefs.add(ref);
-                        break;
-                    case REMOVE_REF:
-                        ref.runCleanupTaskInternal();
-                        break;
-                    default:
-                        Log.e(TAG, "Bad message=" + msg.what);
-                        break;
-                }
-
-                if (DEBUG) Log.d(TAG, "will try and cleanup; max = " + sRefs.size());
-
-                synchronized (sCleanupMonitor) {
-                    // Always run the cleanup loop here even when adding or removing refs, to avoid
-                    // falling behind on rapid garbage allocation inner loops.
-                    while ((ref = (CleanupReference) sGcQueue.poll()) != null) {
-                        ref.runCleanupTaskInternal();
-                    }
-                    sCleanupMonitor.notifyAll();
-                }
-                TraceEvent.end();
-            }
-        };
-    }
-
-    /**
-     * Keep a strong reference to {@link CleanupReference} so that it will
-     * actually get enqueued.
-     * Only accessed on the UI thread.
-     */
-    private static Set<CleanupReference> sRefs = new HashSet<CleanupReference>();
-
-    private Runnable mCleanupTask;
-
-    /**
-     * @param obj the object whose loss of reachability should trigger the
-     *            cleanup task.
-     * @param cleanupTask the task to run once obj loses reachability.
-     */
-    public CleanupReference(Object obj, Runnable cleanupTask) {
-        super(obj, sGcQueue);
-        if (DEBUG) Log.d(TAG, "+++ CREATED ONE REF");
-        mCleanupTask = cleanupTask;
-        handleOnUiThread(ADD_REF);
-    }
-
-    /**
-     * Clear the cleanup task {@link Runnable} so that nothing will be done
-     * after garbage collection.
-     */
-    public void cleanupNow() {
-        handleOnUiThread(REMOVE_REF);
-    }
-
-    private void handleOnUiThread(int what) {
-        Message msg = Message.obtain(LazyHolder.sHandler, what, this);
-        if (Looper.myLooper() == msg.getTarget().getLooper()) {
-            msg.getTarget().handleMessage(msg);
-            msg.recycle();
-        } else {
-            msg.sendToTarget();
-        }
-    }
-
-    private void runCleanupTaskInternal() {
-        if (DEBUG) Log.d(TAG, "runCleanupTaskInternal");
-        sRefs.remove(this);
-        if (mCleanupTask != null) {
-            if (DEBUG) Log.i(TAG, "--- CLEANING ONE REF");
-            mCleanupTask.run();
-            mCleanupTask = null;
-        }
-        clear();
-    }
-}