Fixed case when DevtoolsAdbBridge may start few polling loops.

chrome/browser/devtools/device/devtools_android_bridge.h

Index: chrome/browser/devtools/device/devtools_android_bridge.h
diff --git a/chrome/browser/devtools/device/devtools_android_bridge.h b/chrome/browser/devtools/device/devtools_android_bridge.h
index 6a0f781e8138db2e0c4df7204a4de1a33537ee0f..5d523a6e98a619a72fba9f31f5b06c8b63f4507e 100644
--- a/chrome/browser/devtools/device/devtools_android_bridge.h
+++ b/chrome/browser/devtools/device/devtools_android_bridge.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/callback.h"
+#include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
@@ -39,6 +40,8 @@ class DevToolsAndroidBridge
           DevToolsAndroidBridge,
           content::BrowserThread::DeleteOnUIThread> {
  public:
+  static const int kAdbPollingIntervalMs;
+
   typedef base::Callback<void(int result,
                               const std::string& response)> Callback;
 
@@ -242,6 +245,11 @@ class DevToolsAndroidBridge
     device_providers_ = device_providers;
   }
 
+  void set_device_count_request_scheduler_for_test(
+      base::Callback<void(base::Closure)> scheduler) {
+    device_count_request_scheduler_for_test_ = scheduler;
+  }
+
   static bool HasDevToolsWindow(const std::string& agent_id);
 
  private:
@@ -277,9 +285,14 @@ class DevToolsAndroidBridge
   void CreatedDeviceManager(scoped_refptr<AndroidDeviceManager> device_manager);
   void RequestDeviceList();
   void ReceivedDeviceList(RemoteDevices* devices);
+  void StartDeviceListPollingLoop();
+  void StopDeviceListPollingLoop();
 
   void RequestDeviceCount();
   void ReceivedDeviceCount(int count);
+  void StartDeviceCountPollingLoop();
+  void StopDeviceCountPollingLoop();
+  void ScheduleDeviceCountRequest(base::Closure callback);
 
   void CreateDeviceProviders();
 
@@ -289,12 +302,18 @@ class DevToolsAndroidBridge
 
   typedef std::vector<DeviceListListener*> DeviceListListeners;
   DeviceListListeners device_list_listeners_;
+  base::CancelableCallback<void()> request_device_list_bound_;
+  base::CancelableCallback<void(RemoteDevices* devices_ptr)>
+      received_device_list_bound_;
 
   typedef std::vector<DeviceCountListener*> DeviceCountListeners;
   DeviceCountListeners device_count_listeners_;
+  base::CancelableCallback<void()> request_device_count_bound_;
+  base::CancelableCallback<void(int)> received_device_count_bound_;
 
   AndroidDeviceManager::DeviceProviders device_providers_;
   PrefChangeRegistrar pref_change_registrar_;
+  base::Callback<void(base::Closure)> device_count_request_scheduler_for_test_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsAndroidBridge);
 };