DevTools: add backend for discovering connected ADB devices.

chrome/browser/devtools/devtools_adb_bridge.h

+// Copyright (c) 2013 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.
+
+#ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_ADB_BRIDGE_H_
+#define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_ADB_BRIDGE_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace base {
+class Thread;
+}
+
+class DevToolsAdbBridge : public base::RefCountedThreadSafe<DevToolsAdbBridge> {
+ public:
+  typedef base::Callback<void(const std::string& error,
+                              const std::string& data)> Callback;
+
+  static DevToolsAdbBridge* Start();
+  void Query(const std::string query, const Callback& callback);
+  void Stop();
+
+ private:
+  friend class base::RefCountedThreadSafe<DevToolsAdbBridge>;
+
+  explicit DevToolsAdbBridge();
+  virtual ~DevToolsAdbBridge();
+
+  void StartHandlerOnFileThread();
+  void StopHandlerOnFileThread();
+
+  void ResetHandlerAndReleaseOnUIThread();
+  void ResetHandlerOnUIThread();
+
+  void QueryOnHandlerThread(const std::string query, const Callback& callback);
+  void QueryResponseOnHandlerThread(const Callback& callback,
+                                    const std::string& error,
+                                    const std::string& response);
+
+  void RespondOnUIThread(const Callback& callback,
+                         const std::string& error,
+                         const std::string& response);
+
+  // The thread used by the devtools to run client socket.
+  scoped_ptr<base::Thread> thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(DevToolsAdbBridge);
+};
+
+#endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_ADB_BRIDGE_H_