Clean up HID backend and API.

chrome/browser/extensions/api/hid/hid_connection_resource.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_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_
-#define CHROME_BROWSER_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_API_HID_HID_CONNECTION_RESOURCE_H_
+#define CHROME_BROWSER_EXTENSIONS_API_HID_HID_CONNECTION_RESOURCE_H_
 
 #include <string>
 
-#include "base/basictypes.h"
-#include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/api/api_resource.h"
 #include "chrome/browser/extensions/api/api_resource_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "device/hid/hid_connection.h"
-#include "device/hid/hid_device_info.h"
-
-namespace net {
-class IOBuffer;
-}  // namespace net
 
 namespace extensions {
 
 class HidConnectionResource : public ApiResource {
  public:
   HidConnectionResource(const std::string& owner_extension_id,
-                    scoped_refptr<device::HidConnection> connection);
-
+                        scoped_refptr<device::HidConnection> connection);
   virtual ~HidConnectionResource();
 
-  scoped_refptr<device::HidConnection> connection() {
+  scoped_refptr<device::HidConnection> connection() const {
     return connection_;
   }
 
  private:
   friend class ApiResourceManager<HidConnectionResource>;
-  static const char* service_name() {
-    return "HidDeviceResourceManager";
-  }
 
+  static const char* service_name() { return "HidConnectionResourceManager"; }
 
   static const content::BrowserThread::ID kThreadId =
       content::BrowserThread::FILE;
 
   scoped_refptr<device::HidConnection> connection_;
 
   DISALLOW_COPY_AND_ASSIGN(HidConnectionResource);
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_BROWSER_EXTENSIONS_API_HID_HID_DEVICE_RESOURCE_H_
+#endif  // CHROME_BROWSER_EXTENSIONS_API_HID_HID_CONNECTION_RESOURCE_H_