Added device count test.

chrome/browser/devtools/device/devtools_android_bridge.h

 // 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVICE_DEVTOOLS_ANDROID_BRIDGE_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVICE_DEVTOOLS_ANDROID_BRIDGE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 224 matching lines @@
   void AddDeviceCountListener(DeviceCountListener* listener);
   void RemoveDeviceCountListener(DeviceCountListener* listener);
 
   void set_device_providers_for_test(
       const AndroidDeviceManager::DeviceProviders& device_providers) {
     device_providers_ = device_providers;
   }
 
   static bool HasDevToolsWindow(const std::string& agent_id);
 
+  void set_polling_interval_for_test(int value) {
+    polling_interval_for_test_ = value;
+  }
+
  private:
   friend struct content::BrowserThread::DeleteOnThread<
       content::BrowserThread::UI>;
   friend class base::DeleteHelper<DevToolsAndroidBridge>;
 
   class HandlerThread : public base::RefCountedThreadSafe<HandlerThread> {
    public:
     static scoped_refptr<HandlerThread> GetInstance();
     base::MessageLoop* message_loop();
 
@@ skipping 31 matching lines @@
   scoped_refptr<AndroidDeviceManager> device_manager_;
 
   typedef std::vector<DeviceListListener*> DeviceListListeners;
   DeviceListListeners device_list_listeners_;
 
   typedef std::vector<DeviceCountListener*> DeviceCountListeners;
   DeviceCountListeners device_count_listeners_;
 
   AndroidDeviceManager::DeviceProviders device_providers_;
   PrefChangeRegistrar pref_change_registrar_;
+
+  int polling_interval_for_test_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsAndroidBridge);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVICE_DEVTOOLS_ANDROID_BRIDGE_H_