Final batch adding real histogram values for extension events.

extensions/browser/api/hid/hid_device_manager.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 EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_
 #define EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/scoped_observer.h"
 #include "base/threading/thread_checker.h"
 #include "device/hid/hid_service.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/browser/extension_event_histogram_value.h"
 #include "extensions/common/api/hid.h"
 
 namespace device {
 class HidDeviceFilter;
 class HidDeviceInfo;
 }
 
 namespace extensions {
 
 class Extension;
@@ skipping 70 matching lines @@
 
   // Builds a list of device info objects representing the currently enumerated
   // devices, taking into account the permissions held by the given extension
   // and the filters provided.
   scoped_ptr<base::ListValue> CreateApiDeviceList(
       const Extension* extension,
       const std::vector<device::HidDeviceFilter>& filters);
   void OnEnumerationComplete(
       const std::vector<scoped_refptr<device::HidDeviceInfo>>& devices);
 
-  void DispatchEvent(const std::string& event_name,
+  void DispatchEvent(events::HistogramValue histogram_value,
+                     const std::string& event_name,
                      scoped_ptr<base::ListValue> event_args,
                      scoped_refptr<device::HidDeviceInfo> device_info);
 
   base::ThreadChecker thread_checker_;
   content::BrowserContext* browser_context_ = nullptr;
   EventRouter* event_router_ = nullptr;
   bool initialized_ = false;
   ScopedObserver<device::HidService, device::HidService::Observer>
       hid_service_observer_;
   bool enumeration_ready_ = false;
   ScopedVector<GetApiDevicesParams> pending_enumerations_;
   int next_resource_id_ = 0;
   ResourceIdToDeviceIdMap device_ids_;
   DeviceIdToResourceIdMap resource_ids_;
   base::WeakPtrFactory<HidDeviceManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HidDeviceManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_HID_HID_DEVICE_MANAGER_H_