Implementation of DevToolsBridgeServer.

components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/util/LooperExecutor.java

Index: components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/util/LooperExecutor.java
diff --git a/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/util/LooperExecutor.java b/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/util/LooperExecutor.java
new file mode 100644
index 0000000000000000000000000000000000000000..ce383be38984a22a93c21838eca6452d531d6718
--- /dev/null
+++ b/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/util/LooperExecutor.java
@@ -0,0 +1,56 @@
+// 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.components.devtools_bridge.util;
+
+import android.content.Context;
+import android.os.Handler;
+
+import org.chromium.components.devtools_bridge.SessionBase;
+
+/**
+ * Implementation of SessionBase.Executor on top of android's handler.
+ */
+public class LooperExecutor implements SessionBase.Executor {
+    private final Handler mHandler;
+
+    public LooperExecutor(Handler handler) {
+        mHandler = handler;
+    }
+
+    public static LooperExecutor newInstanceForMainLooper(Context context) {
+        return new LooperExecutor(new Handler(context.getMainLooper()));
+    }
+
+    @Override
+    public SessionBase.Cancellable postOnSessionThread(int delayMs, Runnable runnable) {
+        CancellableTask task = new CancellableTask(runnable);
+        mHandler.postDelayed(task, delayMs);
+        return task;
+    }
+
+    @Override
+    public boolean isCalledOnSessionThread() {
+        return mHandler.getLooper().getThread() == Thread.currentThread();
+    }
+
+    private final class CancellableTask implements SessionBase.Cancellable, Runnable {
+        private Runnable mTask;
+
+        public CancellableTask(Runnable task) {
+            mTask = task;
+        }
+
+        @Override
+        public void run() {
+            if (mTask != null) mTask.run();
+        }
+
+        @Override
+        public void cancel() {
+            mHandler.removeCallbacks(this);
+            mTask = null;
+        }
+    }
+}